Circles Review Use this to study for the Ch. 8 Test! ? ? Name _______________________________ Date ________________ Period B____, G _____ Circles Review Use this to study for the Ch. 8 Test! Fill in the blanks below with the correct information for #1-#2. Formula for Circumference of a Circle 1) C = __  d Formula for Area of a Circle 2) A = π  __ . ___________ ____________ 3) What does the bottom of the rectangle represent in a circle? ? 4) What does the side of the rectangle represent in a circle? ? Find the circumference in terms of pi. 5) 9.4 mm

Find the circumference. Use 3.14 or for pi. ____________ 9) _____________ Find the circumference. Use 3.14 or for pi. 6) 13 ft Find the area in terms of pi. 7) 8 in Find the area. Use 3.14 or for pi. 8) 17 in 9) Circumference = 34.54 in What is the diameter? (use 3.14 for pi)

Find the area in terms of pi. 10) ______________ 11) _____________ 12) _____________ 13) _____________ 10) Area = 153.86 cm What is the radius? (use 3.14 for pi) 11) A lawn sprinkler sprays water 12 feet in every direction as it rotates in a circle. How many square feet of the grass gets watered? Use or 3.14 for . 12) The distance from the center of a carousel to the outside is 16 feet. What is the distance around the carousel? Write your answer in terms of pi. Find the area in terms of pi. 13) 6 mm

14) π is the amount of diameters around a circle True or False? 14) π is the amount of diameters around a circle 15) The diameter of a circle is double the radius 14) _____________ 15) _____________ 16) ______________ 17) ______________ _____________ Find the diameter and radius for each circle. 9 cm 16) 24 cm 17) d = ____ r = ____ d = ____ r = ____ Find the missing part of the circle given either the radius or diameter. 18) Radius = 22 feet Diameter = _____ 19) Diameter = 22 inches Radius = _____ Find the circumference in terms of pi. 20) 17 ft