Mathematics
NULL
Medium
Question
If the side of a square is increased by 25%, by how much percent does its area increase?
A
125
B
156.25
C
50
D
56.25
✓ Official correct answer
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A
125
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B
156.25
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C
50
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D
56.25
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Explanation
New/old = (5/4)² = 25/16 = 1.5625. Increase = 56.25%.