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If the diagonal of a rectangle is 17 cm long and its perimeter is 46 cm, the area of the rectangle is.
2(l + b) = 46 => (l + b) = 23
√(l2 + b2) = 17
=> (l2 + b2) = 289
(l2 + b2) = (l + b)2 - 2lb
=> 289 = (232 - 2lb)
=> 2lb = (23)2 - 289 =(529 -289) = 240
=> lb = 120
Area = 120 cm2
By: MIRZA SADDAM HUSSAIN ProfileResourcesReport error
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