question is below....
![question is below class=](https://us-static.z-dn.net/files/d41/91e481fb1b66a10cd161dceec5a2aaf7.png)
Answer:
Step-by-step explanation:
For window, area 3×2
=6
For wall, area=20×16
=320
Area of wall withot window=320-6
=316