Question

the diameter of a well is 2.1 M and is 14m Deep find the cost of testing kit at ₹5 per square metre

Answer 1

A=2πrh+2πr^2
r= 1.05m
h=14m

therefore area= 99.29m square
total cost for kit =99.29 × 5
=rs.496.45

Answer 2

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