Answer:
21
Step-by-step explanation:
9+[10+(5-4)x2]
= 9+(10+1x2)
= 9+(10+2)
= 21
12
7c=84
c=84/7
c=12
How to find the area, how to find the high, and how to find the side.
Yep that's all.
oh yea so the answer is um