Question

Diameter of a cylindrical pillar is 50 cm and its height is 3.5 cm. Find the expenditure of white washing the curved surface of the pillar at the rate of Rs. 12.50 per sq. cm.

Answer 1

hope this helps.........

Answer 2

CSA OF CYLINDER = 2πrh
= 2*22/7*25*3.5=550sqcm

cost of white wash= 550*12.5= rs6875