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If a side of a square is increased by 20%, then its area will increase by:
  • a)
    80%
  • b)
    20%
  • c)
    40%
  • d)
    44%
Correct answer is option 'D'. Can you explain this answer?
Verified Answer
If a side of a square is increased by 20%, then its area will increase...
Formula:
A = s2, where 
A = Area of the square
s = Side of the square
Calculation:
Let the side of the square be 10 units.
Area = 10 × 10 = 100 sq. unit
According to the question-
New side = 10 + 2 = 12 units
New area = 12 × 12 = 144 sq. units
Increase in area = 144 - 100 = 44 sq. units
Increase in area % = 
× 100 = 44%
The net increase in the area is 44%. 
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If a side of a square is increased by 20%, then its area will increase by:a)80%b)20%c)40%d)44%Correct answer is option 'D'. Can you explain this answer?
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