Answer:
9.22
sorry If I am wrong...
324 inches
Step-by-step explanation:
18 x 18 or 18² is 324
43m
3(14m+m)
42m+3m
45m
A = h(a+b)/2 for h
2A = h(a + b)
h(a+b) = 2A
h = 2A/(a+b)
its 23