Answer:
20 cm
Step-by-step explanation:
A prism's volume is found using the formula A = B*h where B is the are of the base. Here the volume v = 250 and the B = 12.5. Substitute the values and solve for h.
250 = 12.5*h
250/12.5 = h
20 = h
75 is 150% of 50!
9 hours
1 chapter ≈ .5 hour
18 x .5 = 9