Name: _______________________ Circles – Mixed Problems 1 circle in terms of . Part B Find the area of the circle in terms of . Part C Find the circumference of the circle to the nearest tenth of a meter. Part E Approximate the circumference of the circle. Part D Find the area of the circle to the nearest tenth of a meter. Part F Approximate the area of the circle. Use the circle to answer the questions that follow. Part A Find the circumference of the circle in terms of . Part B Find the area of the circle in terms of 3 Sheet # 08-05 Use the circle to answer the questions that follow. Part A Find the circumference of the 2 Date: _______ Class: Pre-Algebra . Part C Find the circumference of the circle to the nearest tenth of a meter. Part E Approximate the circumference of the circle. Part D Find the area of the circle to the nearest tenth of a meter. Part F Approximate the area of the circle. Isabella’s giant dog has run away! It’s time to call on a search party! You want to search in all 5 directions within 6 mile from her home. Rounded to the nearest hundredth of a square mile, what is the area, in square miles, that your party will search? Show your work. Answer _________ square miles 4 5 If the radius of a circle is 12 cm, what is the diameter? A 6 cm C 6 cm B 24 cm D 24 cm If the diameter of a circle is 14 inches, what is the radius? A 7 in. C 7 in. B 28 in. D 28 in. The circumference of a circle is 158.45 yards. 10 What is the diameter of the circle rounded to the nearest hundredth? A B C D 3.14 yds 25.22 yds 50.44 yds 100.87 yds The circumference of a circle is 62.8 6 If the circumference of a circle is doubled, how does the radius of the circle change? A B C D 7 length of the radius of the circle? A B C D 20 centimeters 10 centimeters 9 centimeters 19 centimeters A circle has a circumference that measures 14 yards. What is the radius, in yards, of the circle? A B C D 8 The radius does not change. The radius becomes half as long. The radius becomes four times as long. The radius becomes twice as long. 11 centimeters. What is the best estimate for the 14 7 4 2 An above ground swimming pool is 18 feet in diameter. How does the pool’s diameter d compare to its circumference C? A B C D 1 C 2 d 2C 1 d C 3 d 3C 12 her circular garden. What is thearea, in the Diana puts a brick border of 25 feet around square feet, of the circle? A 10 feet B 12.5 feet C 156.25 feet D 625 feet d The circumference of a circle is 18 13 centimeters. What is the area, in square centimeters, of this circle? 9 Lucinda is trimming the edge of a circular tablecloth. The tablecloth has a diameter of 7 feet. How much trim does Lucinda need, to the nearest foot? A B C D 44 ft 22 ft 11 ft 6 ft A B C D 9 sq cm 36 sq cm 81 sq cm 324 sq cm The area of a circular field of land is 64 square yards. How many yards of fence would you need to 14 enclose the plot of land? Express your answer in terms of . Show your work. Answer _________ yards