Question

El perímetro de un cuadrado es de 36 pulgadas. ¿Cuál es su área, en pulgadas cuadradas? Sand

Answer 1

The formula for the perimeter of square with side a is,

$P=4a$

Determine the side of square for P = 36.

$\begin{gathered} 36=4a \\ a=\frac{36}{4} \\ =9 \end{gathered}$

The formula for the area of square is,

$A=a^2$

Substitute the value of a in the formula to obtain the area of square.

$\begin{gathered} A=(9)^2 \\ =81 \end{gathered}$

So area of square is 81 square inches.