Question

A circle has a radius of 3 cm. What happens to the area if the radius is doubled to 6 cm.
A.It is doubled
B.It is tripled
C.It is quadrupled
D.It stays the same

Answer 1

@Hero please help

Answer 2

lets find out...
area of a circle = (pi) * r^2
and if the radius is 3.....then area is : 3.14(3^2) = 3.14 * 9 = 28.26

and if the radius is 6
area = 3.14(6^2) = 3.14 * 36 = 113.04

28.26 * 4 = 113.04.....the area is quadrupled

Answer 3

quadrupled means multiply by 4

Answer 4

so its C?

Answer 5

@texaschic101

Answer 6

C because the are with the radius of 3 is 9pi, while with the radius of 6 the area is 36pi

Answer 7

36/9=4
quadrupled

Answer 8

okay thanks

Answer 9

No medal?