Question

in m.
5. 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 m².
of the base of​

Answer 1

Answer:

Step-by-step explanation:

r = 25 cm = 0.25 ,h=3.5m

So as per the formula we get,

C.S.A = 2π r h

= 2 ×22/ 7 ×0.25 × 3.5 = 5.5 m²

cost of painting the curved surface of the pillar = 5.5× 12.50 = Rs 68.75

Therefore the cost of painting is Rs.68.75

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