Question

What is the formula for finding volume of hollow cylinder having outer radius 'R' inner radius 'r' and height 'h' ?

a) π(R2-r2)h unit3
b) π/3 (R2-r2)h unit3
c) 2/3π (R2-r2)h unit3
d) 4/3π (R2-r2)h unit3​

Answer 1

Answer:

a

Step-by-step explanation:

$= \pi \: {r1}^{2} h - \pi {r2}^{2}h$

$= \pi( {r1}^{2} - {r2}^{2}) h$