Question

Find the curved surface area and total surface area of a right circular cylinder whose height is 20 cm and radius of base is 3.5 cm.

Answer 1

c.s.a of cylinder =2pie r h
=2^22bie7^35bie10^20
=440
t.s.a of cylinder=2 pie r(r+h)
=2^22bie7^35bie10^(3.5+20)
=517