Question

If the radius of a circle is multiplied by 4, then how many times larger is the circumference of the new circle?

Answer 1

The circumference of a circle is given by

\[2*\pi*r\]

Answer 2

and lets say we pick r=1 we get
\[2*\pi\]

Answer 3

now lets say that we multiply the radius by 4 so now r=4

Answer 4

\[8*\pi\]

Answer 5

8 pi is 4 times bigger than 2 pi

Answer 6

so whats the answer

Answer 7

Look at my last post

Answer 8

so what do i do next

Answer 9

so is 32

Answer 10

wait can you tell me what the original radius equals?

Answer 11

i really dont know

Answer 12

Answer is 4

Answer 13

thanks