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One side of a rectangular field is 4 meter and its diagonal is 5 meter. The area of the field is?

12 m2
15 m2
20 m 2
4√5 m2

Correct Answer: 12 m2

Explanation:

Other side = √5² - 4²
= √ 9
=3 m
So The area of the rectangular field = 4 x 3
= 12 m²

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