how many times larger is volume of a cylinder if the radius is muiltiplyed by 3

Question

A 3 times larger

B 6 times larger

C 9 times larger

D 27 times larger

Answer 1

The volume of a cylinder is the circular area times the height. The area of a circle is pi * r²

Thus, the volume is proportional to the square of the radius.

In the equation, substitute 3r for r and you will see that the volume is 9 times larger.