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Find the area of a square, one of whose diagonals is 3.8 m long.

4.22 sq.m
5.22 sq.m
6.22 sq.m
7.22 sq.m

Correct Answer: 7.22 sq.m

Explanation:

Area of the square = $\frac{1}{2} \times d i a g o n a l 2$ = 1/2 * 3.8 * 3.8 = 7.22 sq.m

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