Question

Find the area of the polygon.

4 cm

8 cm

8 cm

4 cm

4 cm

4 cm

The area of the polygon is nothing

▼

cm.cm.

cm squared .cm2.

cm cubed .cm3.

​(Type a whole​ number.)

Answer 1

`A=128\ cm^2`

Explanation:

we know that

The area of the polygon is equal to the area of a square plus the area of four congruent triangles

so

`A=b^2+4[(1)/(2)(b)(h)]`

where

`b=8\ cm\\h=4\ cm`

substitute

`A=8^2+4[(1)/(2)(8)(4)]`

`A=64+64=128\ cm^2`