Work out the area of this circle. Take pi to be 3.142 and give your answer to 1 decimal place

Answers

Answer 1

Step-by-step explanation:

I think you have forgotten to attach the question.

Anyways....

In order to find the area of a circle use the formula:

π[tex]r^{2}[/tex]   Where r is the radius

For example the radius is 3cm. The area of the circle will be:

π × [tex]3^{2}[/tex]

Since you have taken pi as 3.142...

3.142 × [tex]3^{2}[/tex]

3.142  × 9

= 28.278

In order to find the answer to 1 decimal place, check the number next to the number right after the decimal. Is it a number greater than or equal to 5? then add +1 to the number.

= 28.3 [tex]cm^{2}[/tex]


Related Questions

What is the slope of the line below?

Answers

Answer:

-1/2

Step-by-step explanation:

slope=rise/run

rise is up or down

run is right or left

5/-10= -0.5= -1/2 or -5/10= -0.5= -1/2

the answer is -1/2

$4000 is compounded annually at a rate of 7% for 7 years.

Answers

Answer:

hey i think its $16,819 i'm so sorry if i get it wrong

Step-by-step explanation:

GIVING BRAINLIEST!
What is the slope of the positive graph?

Answers

Answer:

A positive slope means that two variables are positively related—that is, when x increases, so does y, and when x decreases, y decreases also. Graphically, a positive slope means that as a line on the line graph moves from left to right, the line rises.

Step-by-step explanation:

A triangle where one angle measures 20° and another angle measures 45°.Help please

Answers

Answer: 115 degrees

Step-by-step explanation:

Pretty vague question but with the info given im guessing that your looking for the last angle in the triangle which is 115 since all angles in a triangle must add up to 180

If 1 sec = 5 dots how many dots will there be in 20 secs

Answers

5*20=100, the answer would be 100 dots

Select the fraction that is NOT in lowest terms . which of these fractions is not in lowest term?

3/14
15/23
10/63
14/21

Answers

Answer:

14/21

Step-by-step explanation:

14/21 is divisible by 7, and can reduce to 2/3

What is the value of the expression below when w=5w=5? 4w+9 4w+9

Answers

Answer:

29

Step-by-step explanation:

substitute 5 where the w goes in the expression.

It should look like  4 • 5 + 9

Using the order of operations ( PEMDAS ) multiply 4 • 5 to get 20 and then add 9 to get 29

Using the order of operations ( PEMDAS ), the value of the expression is 29.

What is simplification of an expression?

Usually, simplification involves proceeding with the pending operations in the expression.

Simplification usually involves making the expression simple and easy to use later.

We need to find the value of the expression below when w = 5w = 5.

Using the order of operations ( PEMDAS ),

Then substitute 5 where the w goes in the expression.

4w+9 =  4 • 5 + 9

4w+9 = 20 + 9 = 29

Using the order of operations ( PEMDAS ), the value of the expression is 29.

Learn more about simplification;

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math pls help and thanks​

Answers

i think it would be 3.4

Select the relation that IS a function.
a. {(-6, -5), (3, 2), (10, 8), (3, 3)}
b. {(-2, -1), (5, -1), (16, 3), (-3, -9)}
c. {(5, 10), (-3, 10), (-3, -10), (4, 7)}
d. {(21, 11), (21, 10), (21, 9), (21, 8)}

Answers

Answer:

B is the function.

Step-by-step explanation:

since there is one y value for every x value we know that is a function

245,600,000,000 In scientific notation

Answers

Answer: 2.456 x 10^11

Step-by-step explanation:

You move the decimal to the left until there’s no more zeroes

Answer:

there :D

Step-by-step explanation:

Move the decimal so there is one non-zero digit to the left of the decimal point. The number of decimal places you move will be the exponent on the  

10 . If the decimal is being moved to the right, the exponent will be negative. If the decimal is being moved to the left, the exponent will be positive.

2.456 ×  10  to the power of 11

I need help , I really don’t understand it .

Answers

Answer:

slope intercept form is the form of y=mx+b, where the slope is m and the y intercept is b.

what you have to do is to solve the equations for y.

1) 2x+2y = 10

  2y = 10 -2x

    y = -x +5

2) 12+4y = -4x

    4y = -4x-12

       y = -x -3

lines are parallel when they have same slope and different y-intercepts. m1=m2 and b1 ≠ b2

lines are perpendicular when the multiplication of their slope gives -1

m1 x m2 = -1

here the slopes are same and y-intercepts are different so lines are parallel.

Find the output, b, when the input, a, is 6.
b=17a

Answers

I think 11 hope this is the answer

The question is in the picture

Answers

Answer:

y= -5x+7

Step-by-step explanation:

since it is parallel, the gradient is the same

m=-5

y=mX+C

y=-5x + c

sub in the coordinate to get the y intercept

(2)= -5(1)+c

2+5 = C

C=7

therefore the ans is :

y= -5x + 7

(tell me if i got it correct)

Need help will give you the brainliest

Answers

Answer:18.4

Step-by-step explanation:add

Larry looked at the clock. It was 9:45 p.m. The bus for his class trip leaves at 8:30 am. How many hours and minutes are there until the bus leaves? ​

Answers

Answer:

There are 10 hours and 45 minutes until the bus leaves.

Answer:

In between the 10pm to 8 am =10 hours

In between the gap of 9:45 to 10 pm =15 min left

In between 8 and 8:30 am =30 min left

So 10hr and 45 min is the answer

HELP PLEASE!!!!!!!!!!!!!!!!!!!

Answers

Answer:

h=20

i=75

g=55

Step-by-step explanation:

20 is equal to h

75 is equal to i

g looks like its in the middle of them so you would subtract the two and be left with 55

g=55

im not the best at math so im sorry if its wrong.

Answer:

H= 20

I= 75

G= 20

Step-by-step explanation:

Find the new price of a 10% markup on the original price of $36.00​

Answers

36 x 0.10 = 3.6
36 + 3.6 = $39.60

8) Mr. Jones deposited $2,000 into an account. He made no
additional deposits or withdrawals. Mr. Jones earned 4.25%
annual simple interest on the money in the account.
What was the balance in dollars and cents in Mr. Jones
account at the end of 4 years?

Answers

Answer:

2340

Step-by-step explanation:

Addison earns a fixed hourly rate working as a sales clerk. If she works on a holiday, she earns a different hourly rate than she earns on a regular day. In one week, she earns $188.50 by working 5 hours on a holiday and 16 hours during regular days. A different week, she earns $254.00 by working 8 hours on a holiday and 20 hours during regular days.

Answers

Answer:

10.50

Step-by-step explanation:

f(1)= -34

f(n)=f(n−1) - 3

Find an explicit formula for f(n).

Answers

Answer:

f(n) = -34 -3(n - 1)

Step-by-step explanation:

The explicit formula for f(n) is given below:

Given that

f(1)= -34

f(n)=f(n−1) - 3

Based on the above information

f(n) = a1 +d(n -1)

a1 = -34

d = -3

So

f(n) = -34 -3(n - 1)

This above represent an explicit formula

11/21
as a decimal rounded to the nearest tenth is.....!?

Answers

Answer:

0.5

Step-by-step explanation:

11 / 21 = 0.5238

0.5238

* If the number you are rounding is followed by 0, 1, 2, 3, or 4, round the number down.

Therefore it's 0.5238 = 0.5

0.5 is the decimal number nearest to tenth of 11/21.

What is Number system?

A number system is defined as a system of writing to express numbers.

Given,

11/21

Eleven divided by twenty one.

0.5238

If the number you are rounding is followed by 5, 6, 7, 8, or 9, round the number up.

If the number you are rounding is followed by 0, 1, 2, 3, or 4, round the number down.

0.5 is the decimal number nearest to tenth.

Hence, 0.5 is the decimal number nearest to tenth of 11/21.

To learn more on Number system click:

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Solve the system of equations by graphing.
y = 2x + 5
y = -1/2x
Where do the two lines cross?

Answers

The answer is (-2,1) or x is -2 and y is 1. You just need to know how coordinate plane works

PLEASE HELP IM BEGGING YOU ITS DUE IN 15 MIN ILL GIVE BRAINEST AND PTS

Answers

answer:

you just have to shrink it down to 4cm then to 2cm

i wish i could help out more, but i would need to have access to the form

hopefully, this helps anyhow :)

good luck

have a great day !!

Please anyone ?? Helpp

Answers

Answer:

Does this count as stander form 6.95880148018

Step-by-step explanation:

Mr. Green baked 24 cookies. 5 sixths of the cookies were oatmeal. How many oatmeal cookies did Mr. Green bake?

Answers

Answer:

20

Step-by-step explanation:

there r 24 cookies

5/6 of 24 is 20 because 24/6 is 4 and 4*5 is 20

Answer:

20 oatmeal cookies

Step-by-step explanation:

If it is 6ths then divide 24 by 6 which is 4 and multiply 5 by 4 which is 20

It takes 9 hours for 8 men to paint a room,
How many men would be needed to paint the room in 4 hours?

Answers

Answer:

6 people

Step-by-step explanation:

Can you guys help I'm having trouble.

Answers

Answer:

given radius =6

Area of triangle =1/2*base*height

=1/2*6*6=18

area of quadrant =1/4πr^2

=1/4*22/7*6*6=22/7*9=198/7=28.2

area of shaded region =area of quadrant -area of triangle

=28.2-18=10.2

Peter has to spend $9000 on expenses each year. If that amount of money is 60% of his salary, then how much money does Peter make working as an administrator per year?

Answers

Answer:

Step-by-step explanation:

9000 is 60% of what number?

9000=0.6*X

9000/0.6=X

X=$15000


What is the range of the function y=-2/3x-10
given a domain of{-9,-3,0,3,9}

Answers

98

kqprhwierui4roqwhrdkej1wddkbrdh

Please help ;-;

2(3x -8y) - 6 =

Answers

Answer:

6x - 16 y -6

Step-by-step explanation:

okay so first you have to distribute the 2 to the number inside the parenthesis

2(3x-8y) -6

you do 2 x 3x, which is 6x

then 2 x -8y, which is -16y

Now the new equation is 6x - 16 y -6

There you go!!

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