Question

A Cylindrical pillar is 50cm in diameter and 3.5cm in height. Find the cost of painting the Curved Surface of the pillar at the rate of Rupess ₹12.50 per m²

Answer 1

Answer:

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Answer 2

Diameter = 50 cm

Radius (r) = 50/2 = 25 cm

Height (h) = 3.5 cm

Curved surface area = 2πrh

= 2×22/7×25×3.5

= 550 cm²

= 0.055 m²

Cost for painting = ₹12.50×0.055

= ₹0.6875

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