Copyright © The McGraw-Hill Companies, Inc. Permission is granted to reproduce for classroom use. NAME ___________________________________________________ DATE _____________________ PERIOD __________ Lesson 3 Homework Practice Area of Composite Figures Find the area of each figure. Round to the nearest tenth if necessary. 1. 5 mm 12 mm 7 mm 10 mm 2. 1.4 cm 0.8 cm 1 cm 4 cm 2.2 cm 3. 5 in. 3 in. 8 in. 4 in. 4. 3.5 yd 4 yd 4 yd 8 yd 4 yd 2 yd 4 yd 2 yd 180 mm 2 9.2 cm 2 73.1 in 2 100.4 yd 2 5. 1 m 1 m 3 m 3 m 1.5 m 6. 4 ft 4 ft 6 ft 6 ft 7. 6 in. 6 in. 6 in. 8. 10 m 7 m 7 m 8.4 m 2 46.3 ft 2 156.8 in 2 147.0 m 2 9. What is the area of a figure formed using a square with sides of 15 centimeters and four attached semicircles? 578.4 cm 2 10. Find the area of a figure formed using a parallelogram with a base of 10 yards and a height of 12 yards and two triangles with bases of 10 yards and heights of 5 yards. 170 yd 2 Find the area of each shaded area. Round to the nearest tenth, if necessary. (Hint: Find the total area and subtract the non-shaded area.) 11. 28 in. 32 in. 16 in. 12. 12 ft 10 ft 16 ft 13. 3 cm 1 cm 1.5 cm 1.5 cm 2 cm 468.2 in 2 17.5 ft 2 6.6 cm 2 14. What is the area of the track in the Circus Maximus as represented below? The center barrier was named the spina. 48,185.3 yd 2 35 yd 35 yd 16 yd 334 yd 591 yd 43 yd 8 yd 8 yd Answers were computed using the π key on a calculator. Math Accelerated • Chapter 12 Volume and Surface Area