The triangular side walls of a flyover have been used for advertisements. The sides of the walls are 122 m, 22 m and 120 m. The advertisements yield an earning of `R s\ 5000\ p e r\ m^2\ p e r\ y e a r`. A company hired one of its wall for 3 months.How much rent did it pay?

Explanation

To solve the problem step by step, we will use Heron's formula to find the area of the triangular wall and then calculate the rent paid by the company for hiring the wall for 3 months.

### Step 1: Identify the sides of the triangle
The sides of the triangular wall are given as:
- \( a = 122 \, \text{m} \)
- \( b = 120 \, \text{m} \)
- \( c = 22 \, \text{m} \)

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