If the diagonal of a rectangle is 17cm long and its perimeter is 46 cm. Find the area of the rectangle.
Choose the correct choice:
A) 110	B) 120	C) 130	D) 140	E) 150
Explanation:   let length = x and breadth = y then   2(x+y) = 46 =&gt; x+y = 23   x²+y² = 17² = 289   now (x+y)² = 23²   =&gt;x²+y²+2xy= 529   289+ 2xy = 529   =&gt; xy = 120   area =xy=120 sq. cm Answer: 120
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If the diagonal of a rectangle is 17cm long and its perimeter is 46 cm. Find the area of the rectangle.