The three sides of a triangular field are 20 metres 21...

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The three sides of a triangular field are 20 metres, 21 metres and 29 metres long respectively. The area of the field is :

A. 210 m²

B. 215 m²

C. 230 m²

D. None of these

Answer: Option A

Solution (By Examveda Team)

Since (20)² + (21)² = (29)²
So, it is a right-angled triangle with base = 20 m and height = 21 m
∴ Area = $$\left( {\frac{1}{2} \times 20 \times 21} \right)$$ m² = 210 m²

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