Mathematics Middle School

What is the area of the top surface of a circular manhole cover that has a diameter of 60 centimeters?

Answers

Answer 1

Answer:

A≈2827.43cm²

Step-by-step explanation:

A≈2827.43cm²

d Diameter

Using the formulas

A=πr2

d=2r

Solving forA

A=1

4πd2=1

4·π·602≈2827.43339cm²

Related Questions

Angles T and V are complementary. Angle T has a measure of (2x+10) degrees. Angle V has a measure of 48 degrees. What is the value of x?

answer choices
16 degrees

19 degrees

26 degrees

42 degrees

Answers

it is 19 degrees (19 times 2 equals 38. 38+10=48

Han has 10 cubes, every 5 inches on aside. Which expression shows the total volume of Han's cubes? *Choose All That Apply*

(a) (10⋅5)^3

(b) 10⋅5^3

(c) 5⋅5⋅10

(d) (10⋅5)^2

Answers

I think (C) 5•5•10 is the answer

The correct answer is C

5 x 5 x 10

help plsss
Write an equation for the word problem and solve it (show work).

"ally became a waiter at a fancy restaurant. She makes $9 per hour. One night she made $150 in tips. How many hours did she work if he made a total of $226.50."

Variable: x = hours
Equation: __________________
Work:
Solution: x = ______ hours

Answers

Answer:

226.50 - 150 = 76.5 divided by 9 = 8.5 hours

Step-by-step explanation:

Answer:

8.5 hours

Step-by-step explanation:

First, you need to subtract 226.50 and 150 which gives you 7.65. After that, you need to divide 76.5 by 9 which will give you 8.5 hours. I hope this helps

The width of a rectangle is 4n - 1.5 feet and the length is 1.5n + 4 feet. Find the perimeter of the rectangle. The perimeter of the rectangle is feet.
(Simplify your answer. Use integers or decinals for any numbers in the expression.)

Answers

Answer:

11n + 5

Step-by-step explanation:

First, what is the perimeter of a rectangle referring to? It's referring to the outside surrounding the rectangle. You just need to know that the formula for a rectangular perimeter is:

2(L+W) (W = width, L = length)

We are given width: 4n - 1.5We are given length: 1.5n + 4

Now substitute those values for the formula.

2 (4n-1.5 + 1.5n + 4)2 (5.5n + 2.5)11n + 5

.....|┐∵|┘...... └|∵┌|.....

Answers

Beep boop bop beb ......

Answer:

Step-by-step explanation:

Astronomers sometimes use angle measures divided into degrees, minutes, and seconds. One degree is equal to 60 minutes, and one minute is equal to 60 seconds. Suppose that ∠J and ∠K are complementary and that the measure of ∠J is 45 degrees, 30 minutes, 14 seconds. What is the measure of ∠K?

The measure of ∠K is ______ degrees, ______minutes, and _____ seconds.

Answers

Answer:

Here's what you need to know to answer this question:

If two angles are "complementary"

then they add up to 90 degrees.

So now you know that

(Angle-J) + (Angle-K) = 90 degrees .

Subtract (Angle-J)

from each side: Angle-K = (90 degrees) - (Angle-J)

Angle-K = (90 degrees) minus (48 degrees 26 minutes 8 seconds)

As soon as you do that subtraction, you have the answer.

The thing that makes it tough is subtracting some minutes

and some seconds from 90 degrees.

How you do that is: An unusual kind of regrouping ('borrowing').

Usually, when you regroup, you take '1' from a place and use it

to make '10' in the smaller place.

This time, when you take '1' from a place, it gives you '60'

in the smaller place.

-- Take 1 degree away from the 90 degrees.

Use it to make minutes.

Then you have 89 degrees 60 minutes .

-- Take 1 minute away from the 60 minutes.

Use it to make seconds.

then you have 89 degrees 59 minutes 60 seconds .

Now the subtraction is a lot easier.

89 degrees 59 minutes 60 seconds

minus 48 degrees 26 minutes 8 seconds .

That's easy to do, and the difference is the measure of Angle-K.

Step-by-step explanation:

PLEASE HELP WILL MARK BRAINLIEST!!!

Answers

Answer:

Mode is 5 cuz 5 has the most numbers

Step-by-step explanation:

the answer is 5 because mode is the value that appears the most

Simplify the expression when y = 6: 4y + (7 x 2) -13

Answers

Answer:

Step-by-step explanation:

So we first simply 4y+(7 times 2)-13

=4y+1

Then we put y=6 in!

24+1

=25

Hoped I helped!

Me and Vanimeldawolf29 is the same person, so we are going to have the same explanation!!!

Answer:

Step-by-step explanation:

So we first simply 4y+(7 times 2)-13

=4y+1

Then we put y=6 in!

24+1

=25

Hoped I helped!

Me and Eternalvanimelda27 are the same person, so we are going to have the same explanation!!!

plz help wit 1 3 4 i

Answers

A C F
i truly hope that answers your questions correctly

A semi trailer is being packed with boxes that are 1 feet on each edge. The cargo space of the trailer is 28 feet long, 8 feet wide, and 9 feet high. What is the maximum number of boxes that will fit inside the trailer?

2,016 boxes
540 boxes
2,138 boxes
633 boxes

Answers

Answer:

2016

Step-by-step explanation:

28x8x9

2016 boxes
28•8•9
=
2016

Kenny is building a box using 2 identical square pieces of wood and 4 identical rectangular pieces of wood, as shown. What is the surface area of the box?

Select one:

84

336

108

434

Answers

Answer:

Step-by-step explanation:

108

Answer:108

Step-by-step explanation:

my brain told me

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Answers

Answer:

Step-by-step explanation:

I think that it's luster tell me if i am right :)

Please help I'm not the best at word problems and I really need help

Answers

Answer :
70mins(T) x 65(d) divided by half

You have 85miles left so 1hour and 30mins

the following linear system is to be solved using the elimination method. 5x + 7y=0 x+ 4y= -1 the first step would be to
A. add the equations
B. subtract the equations
C. multiply the first equations by 5
D. multiply the second equation by 5

Answers

The correct answer would be D Have a nice day

A line passes through the points (1, 3) and (3, -1) on a coordinate plane. What is the equation of this line in slope-intercept form?

y = [ ] x [ ] [ ]

fill in the [ ].

Answers

Answer:

y=[-2]x[+][5]

Step-by-step explanation:

[tex]\frac{-1-3}{3-1}=\frac{-4}{2} =-2[/tex] m= -2

Using the point (1,3) Find the value of b

3= -2(1)+b

3= -2+b

+2 +2

---------

5=b

y= -2x+5

The answer is Y=-2x+5

dexter deposited $6,300 into a savings account that earns 2.60% simple interest per year. how much will he earn in 4 years?

Answers

Answer:

= $655.20

Step-by-step explanation:

Simple Interest =( Principal * rate * time)/100

=( $ 6300 * 2.60% * 4years)/100, workout in the brackets first then divide by 100.

= 65520/100

= $655.20

Dexter will earn $655.2.

What is the simple interest?

Simple interest is the borrowing amount added only to the principal amount.

Formula to calculate the simple interest is;

S.I. = P x T x R / 100 ,

Where S.I. is simple interest , P is principal amount, T is time period and R is interest rate in a year.

Dexter deposited $6,300 into a savings account that earns 2.60% simple interest per year.

P = $6300

R = 2.60% and T = 4 years

Then by the formula;

6300 x 2.6 x 4 /100

= $655.2

Therefore, Dexter will earn $655.2.

To learn more about the simple interest; https://brainly.com/question/25845758

#SPJ2

PLS PLS PLS HELP ME!
1.) A spinner is equally divided into 8 sections. The sections are numbered 0 through 7. What is the probability of landing on an even number?
2.) 9 blue, 3 red, 4 white marbles are in a bucket. What is the probability of pulling out a white marble?
3.) You have a 6-sided die. What is the probability of rolling a number greater than 3?
4.) 5 pennies, 3 dimes, 2 nickels, and 5 quarters are place in a bag. What is the probability of picking a dime or a nickel?
5.) There are 52 cards in a deck. What is the probability of drawing one card from the deck of cards?
6.) 6 blue, 7 green, 9 brown, and 15 yellow M&Ms are placed in a bucket. What is the probability of pulling out a yellow M&M?
7.) 2 red, 5 blue, 8 green, and 3 yellow chips are placed in a bucket. What is the probability of selecting a chip that is not green?
8.) The letters of the word PROBABILITY are placed in a bag. What is the probability of picking a vowel?
9.) Find the probability of not rolling a 4 or 6 on a number cube.

Answers

1) ANSWER: 1/2, 50%

2) 9+3+4 = 16 4/16 = (1/4, 25%) ANSWER: 1/4, 25%
{Put 4 over 16, because 16 is the total, 4 is the amount of white marbles}

3) ANSWER: 2/3, roughly 66.6%

4) 5+3+2+5 = 15 , 3+2 = 5, 5/15 = 1/3, roughly 33.3%
{Add the total amount of pennies, dimes, nickels, and quarters, and find how many Dimes and Nickels there are combined, put that over the total, simplify}
ANSWER: 1/3, 33.3%

5) , if it’s asking a number 1 card it would be 4/52 = 1/13 = roughly 8% , if it’s asking just one card from the whole deck then 1/52, roughly 2% ANSWER: 1/13, 8% OR 1/52, 2%

6) 6+7+9+15 = 37, 15/37 {Yellow over total amount of m&m’s} Roughly 41%
ANSWER: 15/37, 41%

7) 2+5+8+3= 18 - 8 = 10, 10/18, roughly 55.5%
{It says that’s NOT green, so add up all them, and subtract the green ones, take that number over the total, and that’s your answer} ANSWER: 5/9, 55.5%

8) 11 letters in the world PROBABILITY, 4 vowels, 4/11, roughly 36% ANSWER: 4/11, 36%

9) 4& 6 are two numbers, that’s 6 - 2, 2/3, ANSWER 2/3, 66.6%

Hope this helps.

What is the measure of angle x?
Enter your answer in the box.
x =
UwU PLZ help

Answers

I think it might be 43° because since the line is going through the middle, it would be 180-47-90=43 (the 90 came from the right angle)

hope this helps! :)

Yes it would be 43 . Angle

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Answers

Answer:

bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb

Step-by-step explanation:

Answer:

48 + y = x

Hope it helps

Pls mark me as the brainliest

Thank you

Really sorry again, I just really need help.

Answers

The part a is False because 45 times 3.2 is 144 this will lead to the answer for Part B to be “B” since the decimal was multiplied incorrectly

i think this would be false

this is 1-12 theres 23 in total

Answers

Answer: i cant put every answer on here but i could put the answers in the comments of you want me to.

Step-by-step explanation:

HHEEEEEEELPPPPP, I'LL MARK THE BRAINLIEST

Answers

Answer: 6 square 4

Step-by-step explanation:

i hope this helps

Answer: 1
-
6^8. That’s the best I could type it lol

Find the value of x in this figure

Answers

Answer: 35
Each triangle adds up to 180 degrees by adding the two angles that you already have the value of (37+108) and subtract it from 180 to get the final angle(x) you get 35

Therefore x=35 :)

Explain how to graph an equation if the equation is in slope-intercept form.

Answers

The constant - or b, in the equation y = mx+b - is the y-intercept.

Then just increase your points by m, the slope, for every one unit. ex: if m = 5, then when you move right one unit, move up 5 unites

I just need points glad u got the answer

i don't get it. Please help me with this geometry

Answers

Answer:

I belive the answer is 2 per edge

Step-by-step explanation:

because it is 1/2 per edge and there is 4 cubes on the edge.

The answer should be 2 per edge

It is 105 ¾ miles from my house to the Georgia Aquarium. On my map, it measures 2½ inches. What is the scale factor of the map? Pls explain

Answers

Answer:

90% of people marry there 7th grade love. since u have read this, u will be told good news tonight. if u don't pass this on nine comments your worst week starts now this isn't fake. apparently if u copy and paste this on ten comments in the next ten minutes you will have the best day of your life tomorrow. you will either get kissed or asked out in the next 53 minutes someone will say i love you

Step-by-step explanation:

Hey I don't know how to do this. We have to do it in point slope form
[tex]y - y_{1} = m( x - x_{1})[/tex]

Answers

this information might help!

Please help I will be posting more questions after this one!!!!! HELP MEEEEE

Answers

Answer:

Step-by-step explanation:

Answer:

I think it's B.

Hope this helps!

please please help !!!

Answers

The answer is 5 I am almost positive

it’s is definitely number 5

Shane has a piece of rope that is 7 4/5 units long. If he cuts it into pieces that are each 3/5 of a unit long, how many pieces does he have?

Answers

Answer:

13 pieces

Step-by-step explanation:

7 4/5 divided by 3/5 is equal to 13

Number of pieces = (7 4/5) / (3/5) = (39/5) / (3/5) = (39/5) x (5/3) = 13 pieces

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