A fort has 20 pillars. If each pillar is 35 feet high with a diameter of 1.25 feet, find the cost of polishing all the pillars at the rate of Rs. 60 per sq. feet.
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Answer:
83,892 Rs.
Step-by-step explanation:
C.S.A. of cylinder = πr(r+h)
= 22/7 x 0.625(0.625 + 35)
= 22/7 x 22.26
= 69.91
C.S.A. of 20 pillars = 69.91 x 20
= 1398.2
Cost of polishing = 1398.2 x 60
= 83,892
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