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Q
If the side of square is increased by 5 cm, the area increased by 165 cm2. The side of the square is-
Solution
Let the length of the side of the square = a cmThen, area of the square = a2 cm2The new length of the square = (a + 5)...
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Solution
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Keynote
If the length of the side of the square = A unitsThen, area of the square = A2 units2(a + b)2 = a2 + b2 + 2ab
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