Answer:
○ B. 
Step-by-step explanation:
All sides meet at right angles, so when split up, you have this:

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Answer:
a)10$
Step-by-step explanation:
<span>Treat the surface of the water as 0. The initial height of the weight was 4 ft above the surface of the water, therefore making it have an initial height of +4. If it travels 12 ft downward to hit the bottom of the pool, that means its height decreased by 12, so its falling is -12. To calculate the depth of the pool, use initial height minus drop distance, so 4 - 12. The depth of the pool is 8 ft.</span>
The answer to this is sixteen ( 16)