There is a slide in a park. One of its side walls has been painted in some colour with a message KEEP THE PARK GREEN AND CLEAN (See in Figure) If the sides of the wall are `15 m ,\ 11 m\ a n d\ 6m` , find the area painted in colour.

Explanation

To find the area of the painted wall using Heron's formula, we'll follow these steps:

### Step 1: Identify the sides of the triangle
The sides of the wall are given as:
- Side A = 15 m
- Side B = 11 m
- Side C = 6 m

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