1.

in m2ical pillar is 50 cm in diameter and 3.5 m in height. Find the cost of paintingthe curved surface of the pillar at the rate of12.50 perm

Answer»

Pillar is 50 cm in diameter and 3.5 m high(h)

Convert the diameter (d) to meters (m)

50cmx 1 m = 0.5 m is the diameter in meters

100cm

PI =π = 3.14

circumference (C) =πd = 3.14 x 0.5 m = 1.57 m

The cylinder surface area is C x h = 1.57 m x 3.5 m = 5.5 m2

Cost of white washing = 5.5m2xRs 12.50 = Rs 68.75



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