EduGoog

If each side of rectangle is increased by 20%, then what percent of the area of rectangle is increased?

Option:
A. 20%
B. 44%
C. 80%
D. 88%
Answer: B . 44%

Justification:

Area of the rectangle a = l * b.

Increased area of the rectangle A = L * B

=> A = 1.2l * 1.2b = 1.44a

=> Increased percent is = ((1.44a - a)/a) * 100% = 44%

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