The percentage increase in the area of a rectangle, if each of its sides is increased by 20%, is:
A
40%
B
42%
C
44%
D
46%
Correct Option:
C
Explanation
If both length and breadth increase by 20%, each becomes 1.2 times its original value. New area factor = 1.2×1.2=1.44. Therefore the area increases by 44%, not merely 40%. The extra 4% comes from the product of the two increases.
