For Exercises 47 and 48, answer always, sometimes, or never. 47) The bases of a trapezoid are the same length. 48) A trapezoid with no right angles has four acute angles. Solve each problem. 49) Jerome, who is 12 in. 3 years old, drew a family portrait on a sheet of paper shaped like a trapezoid. His parents want to have a custom frame built for the picture. How much wood is needed for the frame? 9 in. 9 in. 20 in. 50) Mrs. Saldivar wants to install a chain-link fence around her pet area in the backyard. The area is shaped like a trapezoid with one side up against the wall of the home. (The side by the wall is the same length as the opposite side.) How much fencing is needed? 8 ft 18 ft Pet area 21 ft Objective 5: Find the Perimeter and Area of an Irregular Figure Find the perimeter and the area of each fi gure. 51) 1 cm 4 cm 3 cm 4 cm 2 cm 6 cm 52) 14 in. 17 in. 7 in. 10 in. 10 in. 4 in. 53) 11 m 8 m 10 m 8 m 3 m 2 m 54) 10 mm 3 mm 6 mm 8 mm 9 mm 3 mm 18 mm 5 mm 55) Mr. and Mrs. Szabo are having a new driveway installed at a cost of $40 per square meter. The driveway is represented by the shaded region in the fi gure. What is the total cost for the new driveway? 10 m Garage entrance 8 m 15 m 7 m 9 m 4 m 306 CHAPTER 4 Basic Geometry Concepts and Algebra www.mhhe.com/messersmith
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