In a building there are 24cylindrical
pillars the radius of each pillar is 28cm and height is4cm find the total cost for painting the curved surface area of all pillars at the rate of ₹8per metre
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Step-by-step explanation:
C.S.A of a cylinder = 2πrh
. = 2× 22/7 × 28 × 4
= 44×16
= 704cm^
= 7.04m^
cost of painting the pillar= 7.04 × 8
= Rs 56.32
cost of painting 24 pillars = 24×56.32
= Rs 1,351.68
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