The area of a triangle whose sides are of lengths 3...

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The area of a triangle whose sides are of lengths 3 cm, 4 cm and 5 cm is :

A. 8 cm²

B. 6 cm²

C. 10 cm²

D. None of these

Answer: Option B

Solution(By Examveda Team)

Since 3² + 4² = 5²,
So it is a right-angled triangle with Base = 3 cm and Height = 4 cm
∴ Area :
$$\eqalign{ & = \left( {\frac{1}{2} \times 3 \times 4} \right)c{m^2} \cr & = 6\,c{m^2} \cr} $$

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