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Trigonometry

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Measuring Chocolate Ribbon on a Pie

TRIG-GADLSE

A basic pie crust that can be bought at the store measures $10$ inches across in diameter. A baker decides to line the outermost edge of her chocolate cream pie with chocolate ribbon.

If a pie is usually cut into $8$ pieces, determine the length of the chocolate ribbon for a single slice to one decimal place.

A

$7.9$ in

B

$2.7$ in

C

$31.4$ in

D

$4.0$ in

E

$3.9$ in