This is a right triangle. We know that

Therefore,

Now we have:


It should be 140 degrees.
Answer:
2560 cm³
Step-by-step explanation:
Formula for volume of rectangular prism is length x width x height. So in this case, we're just multiplying:
20 x 8 x 16
160 x 16
= 2560
Answer:
B
Step-by-step explanation:
B is the only answer that will ensure she gets graduate students in the sample without getting too few or too many.