Problema Solution
The sides of a rectangle are 20 cm and 15 cm .if each side of the rectangle is increased by 20 %,find the percentage increase in the area.
Answer provided by our tutors
Solution:
Original area:
A1 = 20(15) = 300cm2
New area:
A2 = (20*1.2)(15*1.2) = 432cm2
% increase = (432 - 300)/300 x 100%
% increase = 44%