It's A 15.6
I know it's late but i hope i helped :D
Answer:
Problem 1:
x=12, x=3, x=6
Problem 2:
18*3=54
54/18=3
Problem 3:
Part A: 36/4.5=? 4.5*x=36
Part B: 8
Step-by-step explanation:
The area of the cross-section is 169 sq. cm.
That is the correct answer to this problem
