Question

Find the height of the solid circular cylinder of total surface area 660 cm and radius 5 cm.
Hint.
2 2 ori = 660 = 2 (+ ) = 660
= 2 *5*(5+) = 660 = 5 += 206=21]​

Answer 1

TSA of circular cylinder = 2×22/7×5(5+h)
660 = 220/7(5+h)
(5+h) = 660×7/220
(5+h) = 21
h = 21 - 5
h = 16