Question

The sides of a rectangule are 20 cm and 15 cm . If each side of the rectangle is increased 20% find the percentage increase in the area. ​

Answer 1

Step-by-step explanation:

Original area:

A1 = 20(15) = 300cm2

New area:

A2 = (20*1.2)(15*1.2) = 432cm2

% increase = (432 - 300)/300 x 100%

% increase = 44%