1) If the radius is 5 inches, what is the diameter? a) 5 inches b) 7 inches c) 10 inches d) 15 inches 2) What number do we use to represent pi? a) 3.14 b) 6.12 c) 2.25 d) 1.45 3) The relationship between a circles circumference to its diameter is called? a) area b) circumference c) pi d) Radius e) Diameter 4) The distance from the center to the outside edge is called? a) area b) circumference c) pi d) Radius e) Diameter 5) The distance from one edge of the circle to the other through the center is called? a) area b) circumference c) pi d) Radius e) Diameter 6) Which formula do we use to find the circumference of a circle? a) C = pi x d b) C = r + d x pi c) A = pi x r x r d) A = b x h 7) Which formula do we use to find the Area of a circle? a) C = pi x d b) C = r + d x pi c) A = pi x r x r d) A = b x h 8) How do we find pi? a) Radius Divided by diameter b) Multiply circumference and radius c) Radius Plus diameter d) Circumference divided by diameter 9) How many diameters does it take to go around a circle a) 2 b) about 5 c) a little more than 3 d) depends on the circle 10) If a circle has a diameter of 8 feet, what is the radius? a) 4 b) 2 c) 16 d) 8

Circles

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