I am not sure, but I checked my answer and I am right. Hope this helps, thank you :) !!
Answer:
The amount of water she needs to pump in:
V = Base area x Height x 1/2 = (4/2)^2 x pi x 0.75 x 1/2 = 1.5pi = ~4.7 (ft3)
=> Option D is correct.
Hope this helps!
:)
3. 28 Quarters and 5 dimes.
6.23+ -12.49 -2.6= 6.23+ -12.49+ -2.6
-6.26+-2.6= -8.86