1) What does the line in this picture show? a) Radius b) Circumference c) Diameter d) Area e) Pi 2) What does the line in this picture show? a) Radius b) Circumference c) Diameter d) Area e) Pi 3) What is the perimeter of a circle called? a) Radius b) Circumference c) Diameter d) Area e) Pi 4) Which formula does this picture show? a) Circumference b) Area 5) Which formula would you use if you had the circumference and needed to find the diameter of a circle? a) C = 𝝅 · d b) C = 2 · 𝝅 · r c) A = 𝝅 · r 2 6) Find the area of a pizza with a diameter of 8 inches. Use 3.14 for pi. a) 50.24 in. 2 b) 25.12 in. 2 c) 200.96 in. 2

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