In Exercises 11 and 12, sketch the solid and find its volume. 11. A prism has a height of 1 1.2 centimeters and an 12. A A pentagonal prism has a moment of 9 feet and each equilateral triangle for a base, where each base edge base edge is 3 feet. is 8 centimeters. In Exercises 13-18, find the missing dimension of the prism or cylinder. (See Example 3.) 13. Volume = 560 ft3 14. Volume = 2700 yd3 15. Volume = 80 cm3 8 cm 8 ft 15 yd 5 cm 7 ft 12 yd 16. Volume = 72.66 in.3 17. Volume = 3000 ft3 18. Volume = 1696.5 m3 9.3 ft X 15 m 2 in. In Exercises 19-22, find the volume of the composite solid. (See Example 4.) 19. 5 ft 20. 2 ft 13 ft 2 ft 4 in. 6 ft 10 ft 4 in. 4 in. 1. 3 in. 22. 1 ft 8 in. 11 11 IT 5 ft - - 11 in. 11 11 2 ft 4 ft