Question

HELP!!!

A circle has a diameter of 14 ft. If the area is tripled, what happens to the circumference?

Answer 1

the circumference will increase by a factor of 9

Answer 2

how did you figure that out?

Answer 3

d=14 ft
r1=7 ft
A1= pi*7^2 = 49*pi
A2=49*3*pi = pi* r2^2
r2^2=147 => r2=12.12 ft
circumference 2= 2*pi*r2 = 2*pi*12,12 = 24,24*pi
circumference 1= 2*pi*r1= 2*pi*7= 14*pi
24.24/14= 1.731

Answer 4

oops no its a linear measurement the circumference will increase by a factor of root3

Answer 5

thanks

Answer 6

sorry about the initial mistake...

Answer 7

its ok