Step-by-step explanation:
the answer is going to be 48 ounces instead.
To find c you use cosine or adjacent/hypotenuse. To set up your equation it’ll look like h=16/cos(21). h=hypotenuse which is what your solving for. You should get 17.1383199. I’m not sure what your supposed round to so I gave the full answer.
A&C
B&F
Try it by fold the prism with paper
Use the Pythagorean theorem:
2)
4)