# What is the perimeter of a rectangle with base 3 in. and height 7 in?

color(orange)("Perimeter of rectangle "= 20 " inch"
$\text{Perimeter of a rectangle } P = 2 \cdot b + 2 \cdot h$
$\text{Given " b = 3 " inch", h = 7 " inch}$
$\therefore P = 2 \cdot 3 + 2 \cdot 7 = 20 \text{ inch}$