Question

the area of the base of a right circular cylinder is 15400 cm square and it's volume is 92400 cm cube. find the area of the curved surface.

Answer 1

Hii friend,

Area of base of the right circular cylinder = πr²

15400 = 22/7×r²

r² = 15400×7/22 = 4900

r² = 4900

r = ✓4900 = 70 cm.

VOLUME OF CYLINDER = πr²h

92400 = 22/7×70×70×h

h = 92400/ 220 × 70

h = 6

Therefore,

CSA of cylinder = 2πrh

= 2×22/7×70×6

= 44×10×6 = 440 × 6 = 2640 cm²

Hence,

CSA of cylinder = 2640 cm²

HOPE IT HELPS!!!!!

:-)

Answer 2

Hello,

Csa of cylinder = 2640 CM²

hope it helped