What is the volume of this solid?

a. 1104
b. 132
c. 96
d. 276

For this case we have that the volume of the figure is composed of the volume of a prism and the volume of a pyramid:

The volume of the prism is given by:

Where:

: It is the area of the base

h: It's the height

Substituting:

The volume of the pyramid is given by:

Where:

It is the area of the base

h: It's the height

Substituting:

We add and we have:

Option D

for finding the midpoint of any given 2 pair of points simply add the respective x coordinates with other x coordinate and the y coordinate with other y coordinate and divide them by 2

in your question it will be :

(3+1)/2 for the x coordinate of mid point i.e 2

[8+(-4)]/2 for the y coordinate of midpoint i.e 2

so coordinates of mid point of points (3,8) and (1,-4) will be (2,2)