Question:Find the area of a square, one of whose diagonal is 3.8 m long. 

Answer Area of the square` = 1/2 xx (diagonal)^2` `= (1/2 xx 3.8 xx 3.8) m^2 = 7.22 m^2` 

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