The answer is 5/4 in
The initial length:
1 ft = 12 in
8 ft = 8 * 12 in
= 96 in
The final length:
7 ft 10 3/4 in = 7 ft + 10 in + 3/4 in
= 7 * 12 in + 10 in + 3/4 in
= 84 in + 10 in + 3/4 in
= 94 in + 3/4 in
The cut if the initial length - final length:
96 in - 94 in - 3/4 in = 2 in - 3/4 in = 8/4 in - 3/4 in = 5/4 in
Yes because 9+4 = 13 and if you plug in the y and x it turns out true
1:3, Because you can simplify the numbers by dividing by two.
25 cubic inches because you know that every cone is a third of the volume of the cylinder with which it shares a height and base with.