Question

Area of composite shapes Find the area of the shape shown below.

Answer 1

Answer: 18

Step-by-step explanation:

Here you have two triangles and a square. Or what's also called a trapezoid.

$A=\frac{a+b}{2}h$

a = shorter side = 3

b = longer side = 9

h = height = 3

$A=\frac{3+9}{2}(3)$

$A=\frac{12}{2}(3)$

$A=6*3\\A=18$

Answer 2

Answer:

18units

Step-by-step explanation:

3+9=12

12/2=6

6*3=18