The length of a rectangle is increased by 20% and its breadth is increased by 10%. Which of the following is possible value of the percentage increase in its area?
Answer & explanation
Correct answer: option 3
Let, length be 10 and breadth be 10, area = 100 ( L x B )
After increase - length = 12 and breadth = 11, area = 132 ( L x B )
Increase in area = 132 - 100 = 32
Percentage increase in area = \(\frac{ 32}{100 }\) x 100 = 32%