Question

The area of base of a right circular cylinder is 15400cm^2 an its volume is 92400cm^3. Find its curved surface area.​

Answer 1

area of base=15400

πr^2=15400

r^2=(15400/22)×7 (calculate it)

r^2=4900(it is equal to 70^2)

r=70cm

volume=92400

πr^2h=92400

h=(92400×7)/(22×4900)

h=6cm

c.s.a=2πrh=2640cm^2