Rodney orders a pizza with a 20-inch diameter and asks for a cheese-stuffed crust along its border. The cheese-filled border measures about 251.2 125.6 62.8 31.4 inches.
What we are looking for is the measure around the outer edge of the pizza. On a circle, this is called circumference.
The formula fo circumference is: C = 2 x pi x r
Using 3.14 for pi, we get C = 2 x 3.14 x 10 (note the diameter is 20, so the radius is 10)
C = 62.8 inches.
Hope that helps.
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