A well of inner diameter 14m is dug to a depth of 15m. Earth taken out of it has been evenly spread all around it to a width of 7m to form an embankment. Find the height of the embankment so formed.

Explanation

To solve the problem step by step, we will calculate the volume of the well, the area of the embankment, and then find the height of the embankment.

### Step 1: Calculate the volume of the well
The well is a cylinder, and the volume \( V \) of a cylinder is given by the formula:
\[ V = \pi r^2 h \]
where \( r \) is the radius and \( h \) is the height.
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