Math, asked by Drchotu1686, 1 year ago

find the cost of sinking a tubewall 210m deep having radius 1.5m at the rate of 3 rupees per cubic metre how much will it cost in cementing the inner curved surface at 25 rupees per square metre

Answers

Answered by nikhilkumarsha67

7

cost=25×2×22/7×1.5×210
=50×22×1.5×30
=110×15×30
49500ruppes

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