A triangular plot has sides 26 m, 28 m and 30 m.
The owner wants to lay grass costing Rs 5 per square metre.
What is the total cost (in Rs)?

Question

A triangular plot has sides 26 m, 28 m and 30 m. The owner wants to lay grass costing Rs 5 per square metre. What is the total cost (in Rs)?

Accepted Answer

1680. s = 26+28+30/2 = 42. Area = √42 · 16 · 14 · 12 = √112896 = 336 m^2. Cost = 336 · 5 = Rs 1680.

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