Find the volume of the composite solid. round your answer to the nearest hundredth.
a. 239.23cm^3

b.246.08 cm ^3

c. 294.03 cm ^3

d. 308.78 cm^3

C.

Explanation:

We must find two volumes, that of the quadrangular prism and that of the pyramid of the top and finally add them to get the total volume.

Quadrangular prism volume:

where

is the base area

and H is the height

Volume of the quadrangular pyramid:

To find the value of height H we use pitagoras:

Thus

The total volume is :

Wich is option C.