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 (see Fig. 12.9). The advertisements yield an earning of Rs 5000 per m2 per year. A company hired one of its walls for 3 months. How much rent did it pay?

Question

Philoid · Accepted Answer

The sides of the triangular side walls of flyover are 122m, 22m, and 120m.

Parameter of the triangle = 122 + 22 + 120

= 264m

Semi perimeter of triangle(s) =

= 132m

Now,

Using Heron’s formula,

Area of the advertisement =

=

= 1320 m²

Rent of advertising per year = Rs. 5000 per m²

Rent of one wall for 3 months =

= Rs. 1650000