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

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

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%