Answer :
v(volume)=pi x r²
v/pi = r²
sqrt v/pi = r
this finds the radius, you can then calculate the new volume by doubling the radius
v=pi x (2r)² = 400cm³
v/pi = r²
sqrt v/pi = r
this finds the radius, you can then calculate the new volume by doubling the radius
v=pi x (2r)² = 400cm³