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 m².

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Solution

Height (h) cylindrical pillar = 3.5 m

Radius (r) of the circular end of pillar =

= 0.25 m

CSA of pillar = 2πrh

Cost of painting 1 m²area = Rs 12.50

Cost of painting 5.5 m² area = Rs (5.5 × 12.50)

= Rs 68.75

Therefore, the cost of painting the CSA of the pillar is Rs 68.75.

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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 ₹ 12.50 per $m^{2} . [A s s u m e π = \frac{22}{7}]$

Q. A cylindrical pillar is 50cm in diameter and 3.5m in height. Find the coat of painting the curved surface of the pillar at the rate of ₹12.50 per m×m.

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[Take $π = \frac{22}{7}$ ]

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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 m2.

Height (h) cylindrical pillar = 3.5 m Radius (r) of the circular end of pillar = = 0.25 m CSA of pillar = 2πrh Cost of painting 1 m2 area = Rs 12.50 Cost of painting 5.5 m2 area = Rs (5.5 × 12.50) = Rs 68.75 Therefore, the cost of painting the CSA of the pillar is Rs 68.75.

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 m².

Height (h) cylindrical pillar = 3.5 m

Radius (r) of the circular end of pillar =

= 0.25 m

CSA of pillar = 2πrh

Cost of painting 1 m²area = Rs 12.50

Cost of painting 5.5 m² area = Rs (5.5 × 12.50)

= Rs 68.75

Therefore, the cost of painting the CSA of the pillar is Rs 68.75.