Question

The volume of drum is 6358cm3 and 28cm. Find the radius and curved surface area.

Answer 1

V.of cylinder=6358

πr2h=6358

22/7×r2×28=6358

r2×28=6358×7/22

r2=72.25

r=8.5

C.S.A of cylinder = 2πrh

=2×22/7×8.5×28

=1498