Answer:
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<h2>Given expression:</h2>

<h2>Simplify it in steps:</h2>
<h3>Step 1</h3>
Bring both fractions into common denominator:

<h3>Step 2</h3>
Simplify:






<h3>Step 3</h3>
Compare the result with given expression to get:
1. Triangular prism
2. Sphere i think
Answer:
9
Step-by-step explanation:
I replaced the missing variable with x and solved the equation from there.
11 feet I think, hope this helps