Answer:
Hello!!! Princess Sakura here ^^
Explanation:
Area:
![12x+66](https://img.qammunity.org/2021/formulas/mathematics/high-school/6ietgei9hr4cq74cd29sbvspwaiu7yjzx2.png)
It will actually look like this...
so if you distribute you'll get the blanks.
Perimeter:
![2x+90](https://img.qammunity.org/2021/formulas/mathematics/high-school/pseo2jju1ym24f7ld38g1u9epn3c49odim.png)
It will actually look like this...
so once you distribute the 2's you'll end up with...
so if you add the 66 and the 90 you'll get the blanks.