Find the cost of painting 10 cylindrical pillars of a building at ₹ 3.50 per sq m if the diameter and the height of each pillar is 24 cm and7 m respectively .
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Diameter=24cm => radius =12cm
Height = 7m=> 700 cm
Formula of CSA of cylinder=2πrh
2×22/7×12×700
2×22×12×100
44×1200
52800cm^2=>528m^2
Cost of painting=₹3.50 per m
Painting 10 pillars =3.50×528×10
=>₹18480
samarthgouda24:
52800 CM^2 = 5.28 M^2
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