Question

the curved surface area of a cylinder is 1320 cm square and its base has a diameter of 21 cm find the volume of the cylinder

Answer 1

Diameter is 21 cm so radius is 21/2=10.5

CSA of the cylinder is = 2πrh

2 x 22/7 x 21/2 x h = 1320

h= 1320 x 7 x 2  /  2 x 22 x 21

h=20cm

So volume=πr^2h

⇒22/7 x 21/2 x 21/2 x 20

⇒2310 cm^3

HOPE MY ANSWER HELPS YOU:)