if the side of a square be increased by 4 cms. The area increased by 60 sq. cms . The side of the square is?
Aptitude
Area
Choose an option
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A12 cm
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B13 cm
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C14cm
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DNone of these
Answer
Correct Answer: None of these
Explanation
Let each side = x cm Then, (x + 4 )2 - x2 = 60 ⇒ x 2 + 8x + 16 - x2 = 60 ∴ x = 5.5 cm