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A rectangle of Width 8 centimetres is cut off from a square sheet along its side. The remaining rectangular portion has an area 84 sq. metres. Calculate the side of the square. |
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Answer» Let the side of square = x Sides of rectangle = x, x – 8 Area = x(x – 8) = 84 x2 – 8x = 84 x2 – 8x + 16 = 84 + 16 (x – 4)2 = 100, x – 4 = 10, x = 14 Side of square = 14 centimetre |
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