Answer:
13.4
Step-by-step explanation: sin= opposite/ hyp sin(48) = h/ 18 h = sin(48) * 18
Well if the room is square then you ned to find the square root of the area.
Find 
Answer:
You Answer is C. 738
Step-by-step explanation:
L x W x H
A=
2
w l h l h w =
2 18
13.5
4 13.5
4
18 = 738