Question

A cone has a base radius of 7 centimeters and a height of 21 centimeters. What is the volume of the cone? A. 28π cm3 B. 343π cm3 C. 49π cm3 D. 147π cm3

Answer 1

π*r^2*h/3so let's plug in the values
π*7^2*21/3
7^2=49
21/3=7
49*7=343
now add the pi to it's side
343π
so B is your answer.