Step-by-step explanation:
Answer:
9) x = gy/c, 11) a = np/m
9) g = xc/y
g*y/c = xc/y *y/c
gy/c = x
11) am = np
am/m = np/m
a = np/m
A= b×h
b=12
h=9
12×9= 108
A=108m
Hope this helps.
