Question

If the side of a square be increased by $50$%, fin the percent increase in area.

Answer 1

Let the original side be a

New side$=a+\frac{50}{100}a=1.5$ a

Area$=a^2$

New area $=(1.5a{)}^2=2.25a^2$

% increase $\frac{2.25a^2-a^2\times 100}{a^2}$

= 225 %