Question

MEDAL!



The radius of circle B is 2.5 times the radius of circle A. If the area of circle A is 8 square yards, what is the area of circle B?

Answer 1

First step. Find the radius of circle A using the area of 8 yd^2

Answer 2

Well here is the work that I did.

Answer 3

Okay.

Answer 4

\[3.14 \times r^2 = 8\]
\[r^2 = 3\]
\[\sqrt{3}=1.73\]

Answer 5

\[1.73 \times 2.5 = 4.33 yards\]

Answer 6

First off, I wouldn't round 2.548 to 3...

Answer 7

Okay

Answer 8

it's best to keep it as accurate as possible, and only round towards the end.

Answer 9

understood..

Answer 10

So take the square root of 2.5477. What do you get?

Answer 11

round to the nearest thousandth

Answer 12

1.568

Answer 13

And then i multiply by 3 right?

Answer 14

i got something different...

Answer 15

Sorry 2.5

Answer 16

no...i got 1.596, not 1.568

Answer 17

yes. i typed it wrong in the calculator.

Answer 18

and then what do i do?

Answer 19

That's the approx. radius circle A. Multiply by 2.5 to find the radius of circle B

Answer 20

@StudyGurl14 Thank you.