Calculate the cost of excavating a well that is 14 meters deep with a diameter of 3 meters, if the rate is Rs.15 per cubic meter.

Explanation

First, find the volume of the well using the formula for the volume of a cylinder: π × radius² × height. Here, the radius is half the diameter, so 1.5 meters. Volume = (22/7) × (1.5)² × 14 = 99 cubic meters. Multiplying the volume by the cost per cubic meter: 99 × 15 = Rs.1485.