Question

The curved surface area of cylinder is1,320cm sq and its base has radius of 10.5 cm find the height of the cylinder

Answer 1

curved surface area=2*pi*r*h
1320=2*22/7*10.5*h
1320=44/7*10.5h 
1320=66h
1320/66=h
20=h

height is 20 cm