i need help on this problem i know how to do this types of problem but i dont get this problem i need hep thank you
![i need help on this problem i know how to do this types of problem but i dont get this problem i need hep thank you class=](https://us-static.z-dn.net/files/dc6/53cca3b5f843162e98b5485d1d2aa77e.png)
Answer:
B: 72
Step-by-step explanation:
Split the shape into separate rectangles! It will make the problem much easier. You can split it so that you will have a 12 x 3 rectangle and a 6 x 6 rectangle because you subtract 3 from 9 and subtract 6 from 12.
12 x 3 = 36
6 x 6 = 36
36 + 36 = 72
Let me know if you're still confused!