A rectangle of width 8 cm is cut off from a square sheet along its side .The remaining rectangular portion has an area 84 square centimeter .Calculate the side of the square
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Width of cut off rectangle = 8cm
Area of cut off rectangle = length× breadth
= x × 8cm
Area of Remaining rectangular portion = 84cm square
Side of square = Area of cut off rectangle+ Area of Remaining rectangular portion/2
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