Question

Find the total surface area of a cyllinder,whose diameter is 10cm and height is 12.5cm

Answer 1

diameter of cylinder =10cm

radius of cylinder = d/2 , 10/2 = 5 cm

height of cylinder =12.5 cm

total surface of cylinder = 2 pai r (r+h)

total surface area of cylinder=2×22/7×5 (5+12.5)

= 2×22/7×25×625/100

= 2×22×25×8928/10000

= 9820800/10000

=982.08 cm2

Answer 2

the total surface area of the cylinder=550cm sq