18) The BOSE® Acoustimass® 3 speaker system has 2 cube speakers and an Acoustimass® module. The cube speakers measure 4 in. by 3 in. by 3 in. high. The Acoustimass® module measures 12 1 2 in. by 7 1 2 in. by 14 in. high. Find the combined volume of the speaker system. (www.bose.com) 19) A fl at-screen television is 26 in. tall, 43 in. wide, and 1 1 4 in. deep. What is the volume of the TV? 20) A paperweight is in the shape of a rectangular pyramid. The base is 9 cm wide and 9 cm long, and the paperweight is 8 cm tall. What is its volume? Objective 3: Find the Surface Area of a Rectangular Solid Find the surface area of each fi gure. 21) 22) 5 ft 2 ft 3 ft 8 m 7 m 4 m 23) 7 cm 7 cm 12 cm 24) 3 yd 3 yd 5 yd 25) How much cardboard is needed to make a gift box with a length of 10 in., width of 8 in., and height of 6 1 2 in.? 26) How much plastic is needed to make a storage container with a length of 15 ft, width of 12 1 3 ft, and height of 9 ft? Find the volume and surface area of each fi gure. 27) 6 m 14 m 5 m 28) 5 cm 9 cm 11 cm 29) yd 2 3 yd 2 3 30) yd 2 3 ft 1 2 ft 1 2 ft 1 2 R1) Explain the difference between volume and surface area. R2) Do you fi nd it more diffi cult to use the volume and surface area formulas when fractions are involved? Would it help to review some of the sections in Chapter 3? www.mhhe.com/messersmith SECTION 4.4 Volume and Surface Area 325
messersmith_power_prealgebra_1e_ch4_7_10
To see the actual publication please follow the link above