The answer is No, the cube will not fit because 4 cubic feet is 48 inches, and the bookshelf is only 12 inches, Therefore, the cube is basically larger than the bookshelf. Hope this helps and sorry I’m late.
I hope this helps you
1/4+3/7
7/7.4+3.4/7.4
7/28+12/28
19/28
The midsegment theorem says that the midsegment is half the third side and parallel as well. 20*2 is 40 so x = 35
