Question

A well 2m in radius and 14m deep is to be dug. The cost of digging the well at 1.20 rupees per cubic meter is

Answer 1

volume of week (cylinder)=πr^²h

=22/7x2x2x14
=176m³
cost of digging=176m³x ₹ 1.20
=₹211.2(ANS)

Answer 2

Rs. 211.2/-  is the Cost of Digging

Step-by-step explanation:

Given,

We know that A well is in the shape of cylinder and the volume for the cylinder is $\pi$ times square of radius and depth.

Radius (r) for well = 2m

Depth/Altitude of well, h = 14m

The volume of the wall = $\pi r^2h$

= $\frac {22}{7} \times 2 \times 2 \times 14$

= 176 $cm^3$

• Now, the Cost of digging a well = Rs.1.20 $cm^3$

The total cost of digging = Rs.$176 \times 1.20$

= Rs. 211.2/-