Q3 of 70 Page 20

A cylindrical pillars is 50 cm in diameter and 3.5 m in height. Find the cost of painting the curved surface of the pillar at the rate of 12.50 per m2.

Given,


Diameter of cylindrical pillar = 50 cm


So, radius of pillar =


Height of pillar = 3.5 m


So, curved surface area of pillar = 2πrh =


Cost of painting 1 m2 area = 12.50 rs.


∴ cost of painting 55 m2 =


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