Question

what is the volume of the cone?

A 147 pi cm^3
B 21 pi cm^3
C 189 pi cm^3
D 42 pi cm^3

Answer 1

the formula is V=1/3area of base*high
v=1/3*πr^2*h
=1/3*49π*9=49π*3=147πcm^3
a is the correct answer