Question

a packed circular cylinder has diameter 20 cm and height 30 cm fibd the total surface area and curved surface area . also find its volume

Answer 1

total surface area of cylinder= 2π*10*10+2π*10*30
= 2π(100+300)=2*22/7*400 = 2514.28 sq.cm

curved surface area = 2πrh = 2*22/7*10*30 = 1185.7 1 sq.cm