Add all the side lengths together to find the perimeter.

$7+15+10=?$

Use the equation for finding the area of a triangle.

$\text{Area}=\frac{1}{2}\text{ (base)(height)}$

Add all the side lengths together to find the perimeter.
A rectangle has two pairs of sides with equal lengths.

$\frac{7}{8}+\frac{3}{8}+\frac{7}{8}+\frac{3}{8}=?$

Use the equation for finding the area of a rectangle.

Area = (base)(height)

$\text{Perimeter: }\frac{20}{8}=2.5\text{ inches}$

$\text{ Area:}\ \frac{21}{64}\text{ in}^{2}$