Find the cost of painting 15 cylindrical pillars of a building at Rs 2.50/m2 . The diameter and height of each pillar is 48 cm and 7 m respectively..
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Cost of painting the cylindrical pillars
= Lateral surface are one pillar * 15 * 5/2
= 2 *22 /7 * 0.24 * 7 * 15 * 5/2
= 22 * 0.24 * 15 * 5
= rupees 396
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Solution: It is given that the cost of painting 15 cylindrical pillars of a building at Rs 2.50/m2 . The diameter and height of each pillar is 48 cm and 7 m respectively.
According to Question,
Cost of painting the cylindrical pillars
As we know that,
[Lateral surface are one pillar = 2πrh]
= Lateral surface are one pillar × 15 × 5/2
= 2πrh × 15 × 5/2
= 2 × 22 /7 × 0.24 × 7 × 15 × 5/2
= 22 × 0.24 × 15 × 5
= Rs. 396
[Answer = Rs. 396]
According to Question,
Cost of painting the cylindrical pillars
As we know that,
[Lateral surface are one pillar = 2πrh]
= Lateral surface are one pillar × 15 × 5/2
= 2πrh × 15 × 5/2
= 2 × 22 /7 × 0.24 × 7 × 15 × 5/2
= 22 × 0.24 × 15 × 5
= Rs. 396
[Answer = Rs. 396]
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