Answer:

Step-by-step explanation:
Given
Dimension: 4.75in, 4.75in and 28.5in
<em>[The complete dimension is missing from the question]</em>
Required
Calculate the volume
The volume is calculated as thus:


--- approximated
Kinda late, but do you have the area of the triangle?
Answer:
1160.3
Step by step explanation:
1169.30-9.00
Since the triangles are similar the ratios of the lengths of corresponding sides are equal.
tan Q = opp/adj = RS/QS = YZ/XZ = 9/12 = 3/4