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15, Madhu's flower garden is now a square. If she enlarges it by increasing n 0.metre and the length 3 metres, the area will be 19 sq metres more than the presentarea. What is the length of a side now ?

Answer»

Let the side of the garden(square) is x m. Then the are is x² m².The new length is (x+3) m and the new width is (x+1) m. Then the new area will be, (x+3)(x+1) m².By the given question,(x+3)(x+1)=x²+19or, x²+3x+x+3=x²+19or, 4x+3=19or, 4x=19-3or, 4x=16or, x=4 m



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