5. Madhu's flower garden is now a square. If she enlarges it by increasing the width 1
metre and the length 3 metres, the area will be 19 sq metres more than the present
area. What is the length of a side now?
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2
Answer:
4cm
Step-by-step explanation:
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+19
or, x²+3x+x+3=x²+19
or, 4x+3=19
or, 4x=19-3
or, 4x=16
or, x=4 m
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