Answer:
600
![cm^2](https://img.qammunity.org/2020/formulas/mathematics/middle-school/s2nakjh21x239bgor6au7ofhpcywd28thn.png)
Explanation:
In order to find the area of this shape, we need to break it down into a triangle and a square
The length and width of the square are 20 cm
![(20)(20)=400](https://img.qammunity.org/2020/formulas/mathematics/middle-school/m64hxj37jkr1tz8ik8ncwql6v8hgox6ofx.png)
And the length and height of the triangle are 20 cm
![(1)/(2) (20)(20)=200](https://img.qammunity.org/2020/formulas/mathematics/middle-school/exkvolhy0o8vrdpps6e5ruarp6anbeiff3.png)
Now that we have the area of each shape, we just need to add them together to find the total area
![400+200=600](https://img.qammunity.org/2020/formulas/mathematics/middle-school/njyim0syxsbx1tfs1n9fq71rysp7ayfjdp.png)