The circumference of a circular mirror is 31.4 cm. What is the area of the circular mirror in square centimeters? Use pi = 3.14 .

Answers

Answer 1

Answer : AREA OF A CIRCLE = PIR2 ( PI ×R ×R )

N.B = R MEANS RADIUS.

GIVEN THE CIRCUMFERENCE, WE WILL USE THE CIRCUMFERENCE TO FIND THE RADIUS.

FORMULA FOR FINDING RADIUS = CIRCUMFERENCE ÷ 2 × 3.142.

SO THAT IS : 31.4 ÷ 6.284 = 4.9.

ROUND UP : 5.

SO THE RADIUS IS 5. NOW WE CAN FINDING THE AREA. 3.14×5×5 = 78.5 . Say thanks Nique.


Related Questions

A river guide buys protein bars and bottles of water for participants on a rafting trip. Including taxes, the river guide pays $ 2.50 for each protein bar and $ 1.25 for each bottle of water, spending a total of exactly $ 22.50 . Which combinations of protein bars and bottles of water are possible for the given amounts? Select ALL that apply.

Answers

Answer:

Step-by-step explanation:

2.50   for water

1.25     for protein bar   interesting that is exactly half of the water

22.50   exactly was spent

I couldn't come up a slick equation, so I just applied some logic and used brute forced (trail and error) to solve the problem.

2.5Water + 1.25Protein =   22.5  

      8W     +           2P    =   22.5

      6W     +           6P    =   22.5

      4W     +          10P    =   22.5

      2W     +          14P    =   22.5

There are the possible combinations of both protein bars AND water, since he bought both.  He could have also bought 10 water or 18 protein bars, but that is not part of the combination.

Triangle ABC has side lengths 8 inches, 17 inches, and 15 inches. Sofia uses the following steps to conclude that triangle ABC is not a right triangle.



a2+b2=c282+172=15264+289=225353 ≠ 225



What mistake did Sofia make?




Sofia made a calculation error.


Sofia used the length of one of the legs as c when she should have used the length of the longest side as c.


Sofia does not know if triangle ABC is a right triangle, so she cannot use the Pythagorean Theorem or its converse.


Sofia’s conclusion is incorrect. When the sides of a triangle do not satisfy a2+b2=c2, you cannot conclude that the triangle is a right triangle.

Answers

Answer: Sofia used the length of one of the legs as c when she should have used the length of the longest side as c.

Step-by-step explanation: The leg is the smallest number and the hypothenuse is the biggest nunber.

Answer:

Sofia used the length of one of the legs as c when she should have used the length of the longest side as c.

Step-by-step explanation:

!!please help me questions is at the bottom!!!

Answers

The cylinder is 11 cubic meters greater than the volume of the cone.

Find the value of csc theta, I'd cos thetA =-1/4;180< theta<270

Answers

I know it's a little late, but hopefully it helps :)

 WHO KNOWS FUNCTIONS AND ALL THAT PLZZZ HELP ME ASAP I REALLY NEED IT PLZZ

Answers

the last set because a function can’t have the same two x values

Which statement is true about the points shown on the number line? A number line from negative 8 to negative 3. Points are at negative 5.6 and negative 4.2. CLEAR CHECK −5.6<−4.2, and −5.6 is located to the left of −4.2. −5.6<−4.2, and −5.6 is located to the right of −4.2. −5.6>−4.2, and −5.6 is located to the left of −4.2. −5.6>−4.2, and −5.6 is located to the right of −4.2.

Answers

Answer:

−5.6<−4.2, and −5.6 is located to the left of −4.2

Step-by-step explanation:

Given the statements :

−5.6<−4.2, and −5.6 is located to the left of −4.2 (True) because - 5.6 located to the left of the number line and numbers are arranged from right to left in decreasing order.

−5.6<−4.2, and −5.6 is located to the right of −4.2. (Not true) only the first assertion is correct, - 5.6 < - 4.2, but 5.6 isn't located to the right of - 4.2

−5.6>−4.2, and −5.6 is located to the left of −4.2 (Not true) ; Though 5.6 is located to the left of 4 2, 5.6 is < 4.2

−5.6>−4.2, and −5.6 is located to the right of −4.2. (Not true) ; - 5.6 is < -4.2 and also located to the left of - 4.2

Pls help find the surface area

Answers

Answer:

114

Step-by-step explanation:

17 + 8 = 25

25 ÷ 2 is for one triangle.

25 ÷ 2 = 12.5

12.5 x 4 = 50

(4, because there are 4 triangles)

Then, 8 x 8 is for the middle square, which is 64

64 + 50 = 114

So, The surface area is 114

In 2 years Peter will be twice as old as his sister Eve. The sum of their present age is 26.

i need answers asap thank youuu!!

Answers

Answer:

Eve is 8, 10 in 2 years and peter is 18, 20 in two years

Step-by-step explanation:

26/2=13

Eve = 13    Peter=13

Then just keep subtracting from eve then adding that on to peter. Then add two years everytime for the age they will be in two years

And yh it is basically trial and error

sorry if you get the explanation

Can someone help me find the measure of each angle in the diagram?

Answers

Answer:

we cant read the numbers cuz theyre too small

In PQR, the measure of R=90°, the measure of Q=71°, and RP = 40 feet. Find
the length of QR to the nearest tenth of a foot.

Answers

Answer:

13.8

Step-by-step explanation:

tan Q = opposite    =     40

            adjacent             x

Tan 71  = 40               x tan 71 = 40

  x tan 71  =    40  

     tan 71      tan 71

x =  40   = 13.7731 = 13.8 (rounded to the nearest tenth)

     tan 71

The table below shows a record of three Baloon Pop games.



Number of Players
game 1 players: 52
game 1 winners: 14
game 2 players:77
game 2 winners: 25
game 3 players: 61
Game 4 winners: 25


Based on the data recorded in the table, how many winners would you expect if there are 100 players?

Answers

30 winners if there were 100 players

There are 33 winners which would you expect if there are 100 players, and its calculated values can be defined as follows:

 

Winning percentage:

                    [tex]\text{Number of Players } \ \ \ \ \ \ \ \ \ \ \ \ \ \ \text{ Number of Winners}[/tex]

game 1                   52                                               14

game 2                  77                                                25

game 3                   61                                                25

Total                      190                                               64

According to Heath, there have been 64 winners out of a total of 190 players.

[tex]\to \frac{64}{190}\\\\\to 0.33\\\\[/tex]

Calculating the Winning percentage [tex]= 0.33 \times 100= 33\%[/tex]

Find out more information about the percentage here:

brainly.com/question/24681811

(-7) - 12=

HELP ME PLEASEE​

Answers

Answer:

-19

Step-by-step explanation:

Step-by-step explanation:

this is the solution

I hope it helps

The graph of a function is a line that passes through the coordinates (2, 11) and (8, 14).

Answers

Answer: the answer will be a

Step-by-step explanation:

help me pls theheheh

Answers

Answer:

108 schools

Step-by-step explanation:

Martha use 1 piece of paper and 1 piece of ribbon to make kites. The paper comes in packs of 3 pieces and the ribbon comes in packs of 4 pieces. What is the least number of kites Martha can make without having supplies left over?
ANSWER QUICKKKKKK

Answers

the answer should be 12 kites

Cara has one bag of toys that weighs 2 pounds and another that weighs 48
ounces. How many ounces of toys does Cara have?

Answers

Answer:

80 ounces

Step-by-step explanation:

one pound is equal to 16 ounces.

If we convert both pounds to ounces, we get 32. Simply add 32 to 28 to get your answer.

A cone has radius 9 and a height 12. A frustum of this cone has height 4.
What are the radii of the bases of the frustum?
What is the slant height of the frustum?
What is the lateral area of the frustum?

(If you waste an answer it will be removed so don't try and get "Free" points.)

Answers

Answer:

Part A)

The lower base has a radius of 9 units, and the upper base has a radius of 6 units.

Part B)

5 units.

Part C)

75π or about 235.62 square units.

Step-by-step explanation:

Please refer to the figure below.

The cone has a radius of 9 units and a total height of 12 units.

A frustum of the cone has a height of 4 units.

Part A)

The lower radius of the frustum will simply be 9 units.

For the upper radius, we will use the properties of similar triangles. We will compare the smaller upper triangle to the overall larger triangle. This yields:

[tex]\displaystyle \frac{12}{8}=\frac{9}{x}[/tex]

Solve for x. Simplify:

[tex]\displaystyle \frac{3}{2}=\frac{9}{x}[/tex]

Cross-multiply:

[tex]18=3x\Rightarrow x=6[/tex]

The upper base has a radius of 6 units.

Part B)

We can first find the total slant height of the entire cone. By using the Pythagorean Theorem, this yields that the total slant height is:

[tex]SH^2=12^2+9^2[/tex]

Simplify:

[tex]SH^2=225\Rightarrow SH=15\text{ units}[/tex]

Now, find the slant height of the upper cone:

[tex](SH_\text{cone})^2=8^2+6^2=100[/tex]

So:

[tex]SH_\text{cone}=10[/tex]

Then the slant height of the frustum will be the cone subtracted from the total. Thus:

[tex]SH_{\text{frustum}}=15-10=5\text{ units}[/tex]

Part C)

We can first find the lateral area of the entire cone. The lateral area is given by:

[tex]LA=\pi r\ell[/tex]

The lateral area of the entire cone will be:

[tex]LA=\pi (9)(15)=135\pi[/tex]

The lateral area of the upper cone will be:

[tex]LA_\text{cone}=\pi(6)(10)=60\pi[/tex]

Then the lateral area of the frustum is:

[tex]LA_\text{frustum}=135\pi-60\pi =75\pi\text{ units}^2\approx235.62\text{ units}^2[/tex]

one more question, sorry can someone please help?​

Answers

Answer:B

Step-by-step explanation:

Honestly when I did the math I got closest to b so I think it's B hope his helps

Joshua buys a bunch of watermelons for $7.75. He plans on feeding his friends watermelon as a snack, and there will be 15 people to feed. What is the unit price for one serving of watermelon? The unit price for 1 serving of watermelon is (round to the hundredths place):

Answers

Answer:

$0.52

Step-by-step explanation:

To find the unit cost of one serving of watermelon, divide the price of the bunch of watermelons by the number of people to be fed

unit price = price of the bunch / total people to be fed

$7.75 / 15 = $0.52

juan drove 126 miles in 3 hours. If he continued at the same rate, how long would it take to travel 336 miles? ​

Answers

Answer:

8 hours

Step-by-step explanation:

First you divide 126 by 3 to get the Miles Per Hour, you should get 42 Miles Per Hour, then, just divide 336 by 42 to get the numbers of hours he will have to drive, (which is 8)

Answer:

8 hours

Step-by-step explanation:

126 miles - 3 hours

336 miles - x hours

Cross multiply

126x = 336 x 3

126x = 1008

Divide both sides by 126

x = 1008/126

x = 8

Plz show your work.

Answers

A ....................

Martin is making a model of a Native American canoe. He has 5 1/2 feet of wood he uses 2 3/4 feet for the whole and 1 1/4 feet for a paddle how much does he have left

Answers

Answer:

1 1/2 feet

Step-by-step explanation:

Martin is making a model of a Native American canoe. He has 5 1/2 feet of wood he uses 2 3/4 feet for the whole and 1 1/4 feet for a paddle how much does he have left

This is calculated as:

5 1/2 feet - ( 2 3/4 feet + 1 1/4 feet)

Lowest Common Denominator 4

5 1/2 feet - (2 + 1 ( 3 + 1/4)

5 1/2 feet - 3 + 1

5 1/2 feet - 4 feet

= 1 1/2 feet of wood left

what is 3/12 as a precent

Answers

Answer: 25%

Step-by-step explanation:

Answer:

25% As a decimal its 0.25

Step-by-step explanation:

HELP ONLY ANSWER IF YOU ARE 100% RIGHT. HAVE BEEN WORKING ON THIS FOR ALMOST 11 HOURS. SHOW WORK PLEASE!!!!!! NO LINKS!!!!

Answers

Answer:

180 ft2

Step-by-step explanation:

First solve for the area of the trapzeoid using formula:

A= a+b/2xh

10+18x6/2

A= 84 ft2

Then solve for the rectangles B and C:

12x4= 48

48x2 (because theres two rectangles) which equals 96

Combine the two to get the total area:

96+84= 180

A local frame shop charges $5 per foot for the wood to make a frame. You want to have an 8 inch by 10 inch picture frame. How much will it cost?

Answers

Answer:15$

Step-by-step explanation:

Which set of numbers cannot represent the lengths of the sides of a triangle?

1) 7,5,6
2) 7,18,11
3) 6,8,11
4) 9,1219

Answers

Answer:

2) 7,18,11

Step-by-step explanation:

Triangle inequality:

Sum of side lengths of any two sides must be greater than the third side

7 + 11 = 18, this is the only exception

Option 2

Answer:

2) 7,18,11

Step-by-step explanation:

Because it is the "Correct Answer"

HELP ME I WILL BRAINLIST YOU ​

Answers

Answer:

A

Step-by-step explanation:

Because Im doing test corrections now :(

Select the correct answer.
Consider the graph of the function f(x) = e^x.

Answers

Answer:

Option A

Step-by-step explanation:

Equation of the graph → f(x) = eˣ

Range of the given function is (0, ∞).

If the graph of the given function is translated by 3 units up.

New function will be,

g(x) = eˣ + 3

And the range of the new function will be (3, ∞).

Option A will be the correct option.

The range of the new function will be (3, ∞).

What is the range of a function ?

The range of a function is the complete set of all possible resulting values of the dependent variable (y, usually), after we have substituted the domain

Equation of the graph → f(x) = eˣ

Range of the given function is (0, ∞).

If the graph of the given function is translated by 3 units up.

New function will be,

g(x) = eˣ + 3

And the range of the new function will be (3, ∞).

Therefore , Option A will be the correct answer.

To know more about Range

https://brainly.com/question/17553524

#SPJ5

PLEAS HELP ILL GIVE BRAINLIEST
PLEASE SHOW WORK

Answers

Answer: its A

Step-by-step explanation:

Answer:

the answer is

13 / 40 = 32.5%

Rasheed has an account balance of
-$125.56. Does Rasheed owe the bank more or less than $125?

Answers

Answer:

Yes, He Owes More

Step-by-step explanation:

he or she owes the bank more money because he is in the negative range, so that means whenever you're in the negative range have to pay someone something (which basically means debt)

____________________________________________________________

Hope this helps!

Please give brainlist!

Answer:

yes rasheed owes more the banck than 125

Step-by-step explanation:

raseed owe the bank 125.56. wich is .56 more than 125

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