slant height= 10 Base= 6

This triangle just became the base of a regular prism, with a height of 8:

12. What is the lateral area?

A= 128

13. What is the volume?

V= 96

14. What is the area of the largest rectangular side?

I have a rectangle, with a length of 7 and a width of 4:

15. What is the perimeter?

16. What is the area?