Answer
The ratio of the perimeters 2:3
The ratio of the areas 4:9
Work Step by Step
Find the corresponding side ratio.
$\frac{14}{21}$=$\frac{2}{3}$
The ratio of the perimeters is equal to the ratio of the corresponding sides.
$\frac{2}{3}$=$\frac{2}{3}$. This can be written as 1:2 as well.
The ratio of the areas is equal to the square of the ratio of corresponding sides.
$\frac{2^{2}}{3^{2}}$=$\frac{4}{9}$. This can also be written as 1:4.
