A cylindrical pillar 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 Rs 12.50 per
.
Solution:
Height of the cylindrical pillar
m
Diameter of the cylindrical pillar
cm
Radius of the cylindrical pillar
cm
m
m
Curved surface of the cylindrical pillar
Cost of painting the curved surface of the pillar at the rate of Rs 12.50 per
Rs 68.75
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