Question

A right circular cylinder is closed at both ends find the cost of polishing its total surface at 25paise per sq. Centimetre if the radius of the cylinder is 7cm and depth is 12cm

Answer 1

Answer:

Step-by-step explanation:

hey we have to find the TSA

TSA = $2\pi r( r + h )$

        =2 x 22/7 x 7 x ( 7 + 12 )

        = 44 x 19

       = 836