Question

Find the cost of plastering the curved
surface of a well 8 m deep and 21 min
diameter at the rate of 20 per m2

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Answer 1

Answer:

Step-by-step explanation:height 8cm

d=21

cost 20 per m sq

csa = 2$\pi$rh

2*22÷7×21÷2×8

528m²

cost=20 per m²

so total cost=528×20=10560

Answer 2

step by step explanation

hope it's help you