Answer:
396 
Step-by-step explanation:
Okay, so first we will find the triangle area.
9 * 8 = 72/2 = 36.
Now multiply this by 11 (the width of the prism)
36 * 11 = 396 
Multiply 2 and 3 also multiply 4 and 5 and then divide the products together like so 2x3 divided by 4x5 so 6 divided by 20
I do not know but i am going to still glith the server if you need help go to google
8/5 = 20/x
8x = 20(5)
8x = 100
x = 12.5
answer
<span>length of its shorter side = 12.5 ft</span>