Question

What is the effect on circumference and area of circle J when it's radius is multiplied by 1/5?

A. It's circumference is multiplied by 1/25, and its area is multiplied by 1/25.

B. It's circumference is multiplied by 1/5, and it's area is multiplied by 1/25.

C. It's circumference is multiplied by 1/25, and it's area is multiplied by 1/5.

D. It's circumference is multiplied by 1/5, and it's area is multiplied by 1/5.

Answer 1

\[circumference=2 \pi r\]
\[area=\pi r^2\]
what can you interpret ?

Answer 2

I have no idea I'm very confused

Answer 3

in circumference there is only r
if it is multiplied by 1/5 ,then circumference is also multiplied by 1/5
in area ,there is r^2 so if r is multiplied by 1/5,area is multiplied by(1/5)^2 or 1/25