Question

if curved sarface area is 1980cm^2 and radius of cylinder is 15cm find its height

Answer 1

it's height is 21 cm as
CSA of cinder =2pie r h =1980
2×22/7×15×h=1980
h=1980×7/44×15=21

Answer 2

Curved surface area of cylinder = 2 pie rh
2×22/7×15 ×h =1980
h= 21cm
hope it helps...