Question

The diameter of a circular well is 4.5 m and it depth is 7m find the cost of cementing the inner curved surface of the well at the rate of 3.50 per square rupees

Answer 1

diameter => 4.5m=> radius = 4.5/2m
curved surface area => 2*22/7*4.5/2*7
=>99m^2
therefore cost => 99*3.50 =>rs.346.5

Answer 2

ANSWER :  diameter => 4.5m=> radius = 4.5/2m

curved surface area => 2*22/7*4.5/2*7

=>99m^2

therefore cost => 99*3.50 =>rs.346.5