4.3 Exercises Do the exercises, and check your work. Objective 1: Find the Perimeter and Area of a Triangle 1) What is the formula for the area of a triangle? 2) How do you identify the base of a triangle? Find the perimeter of the given triangle. 3) 5 yd 5 yd 4 yd 6 yd 4) 8 ft 13 ft 15 ft 5) 13 in. 8 in. 14 in. 6) 12 cm 14 cm 15 cm Find the area of the given triangle. 7) 5 m 2 m 1 4 6 m 1 2 8) 6 ft 1 10 1 ft 3 5 18 ft 1 2 9) 2 cm 1 2 7 cm 4 5 4 cm 3 10 1 1 10) yd 8 yd 3 4 yd 5 8 Find the area of the shaded region. 11) 12 ft 6 ft 6 ft 4 ft 12) 6 m 15 m 6 m 18 m Find the area of the unshaded region in each fi gure. 13) 18 in. 5 in. 2 in. 5 in. 8 in. 6 in. 14) 15 in. 4 in. 6 in. 9 in. 8 in. Find the perimeter and the area of each fi gure. 15) 11 m 6 m 3 m 10 m www.mhhe.com/messersmith SECTION 4.3 Triangles 315
messersmith_power_prealgebra_1e_ch4_7_10
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