Question

**MEDAL**
I'm creating flashcards to help me study for the ASVAB. Please help me with figuring out the correct formulas!

The area of one circle is four times as large as a smaller circle with a radius of 3 inches. The radius of the larger circle is

A. 12 inches.
B. 9 inches.
C. 8 inches.
D. 6 inches. <--

Formula?

Answer 1

area of circle = pi(r^2)

Answer 2

@hang254
= 3.14(3^2)
right?

Answer 3

correct

Answer 4

just remember PEMDAS

Answer 5

@hang254
So with using PEMDAS:
(3^2) = 9
3.14(9) = 28.2

...ahh, what did I do wrong?

Answer 6

its asking for the radius of the circle 4 times larger, so you need to find the area of that circle using the given radii, then divide by 4

Answer 7

it should equal 28.2 after dividing by 4

Answer 8

thats how you know its 4 times larger

Answer 9

@hang254
Soo...you're saying that
4(9pi) = 36pi