Answer:

Explanation:
We are given the area of the base and the measure of the height of a solid figure . We want to find the volume of the figure.
Notice that the area of the base of the figure is not a perfect square. Thus, we assume the solid figure to be a cuboid.
What is Cuboid?
Cuboid is a three dimensional rectangle. The dimensions of cuboid are length, width and height
Remember that

Since the base area (l×w) is 40in² and height (h) is 7in, simply substitute:

simplify multiplication:

hence,
The volume of the figure is 280 in³