3. A rectangular pyramid fits exactly on top of a rectangular prism. The prism has a length of 12 in., a width of 4 in., and a height of 5 in. The pyramid has a height of 10 in. Find the volume of the composite space figure.
480
300
2400
400
Please help with these two questions(one is attached and one is written out). Also if anyone had the answers to the Areas and Volumes of Similar Solids Lesson 7 Unit 6 Quiz, please give them so that I may check over my answers.