PSAT Math Multiple-Choice Practice Question 696
Question: 696
A circular pizza has a radius of 8 inches. If the pizza is cut into 8 equal sectors as shown in the drawing below, what is the length of the crust on the edge of each piece, rounded to two decimal places?
Correct Answer: D
Explanation:
(D) To find the length of the crust, we want to find 
of the total crust measure. The total crust measure is the circumference of a circle with radius 8. So the crust of one piece is 
. Because C = 2πr, the measure we're looking for is:
Note that 2(3.14) = 6.28, or choice (D).
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