Question

A cylindrical barrel has a radius of 7.6ft and height of 10.8ft. Tripling which dimensions will triple the volume of the barrel?

height
radius
both height and radius
neither height nor radius

Answer 1

V=hpir^2
3V=3hpir^2
if we trippled the radius
hpi(3^2)
hpi9r^2
9hpir^2
taht would be tripple of tripple

answer is only height