Find The Area

We have a composite figure, a triangle and a square.

Let $A_1$ be the area of the triangle and $A_ 2$ be the area of the square.

The area of the triangle is given by the formula $A_1=\dfrac{1}{2}bh$ .

Substituting, we get

$A_1=\dfrac{1}{2}(3)(8)=12$

The area of the square is given by the formula $A_ =s^2$ .

Substituting, we get

$A_2=8^2=64$

Finally, the area of the composite figure is

$A=A_1+A_2=12+64=$ $\large\color{#D61F06}\boxed{76~cm^2}$ $\boxed{\text{answer}}$

A square has all equal sides, so we can do 8x8=64. Since it has all equal sides, the triangle would be 24, but we have to divide by 2. Next, we add. 64+12=76.