Answer:
the amount of space present is 15,120 cubic inches
Explanation:
To get the amount of space, we simply calculate the volume of the space
This is the area of the base multiplied by the length
Mathematically, we have this as;
Area of the triangle multiplied by the length of the cabinet
We have this as;
(1/2 * 20 * 21) * 72
= 210 * 72
= 15,120 cubic inches