SOLUTION: please help me on this question-- im terrible at math! the spoke of a wheel reaches from the center of the wheel to its rim. If the circumference of the rim of the wheel is 42 i

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Question 15708: please help me on this question-- im terrible at math!
the spoke of a wheel reaches from the center of the wheel to its rim. If the circumference of the rim of the wheel is 42 inches, How long is each spoke? Round the answe to the nearest hundreth

Answer by Earlsdon(6294) About Me  (Show Source):
You can put this solution on YOUR website!
The measure of the circumference of a circle (also a wheel) is given by:
C+=+%28pi%29D or, if you know the radius, C+=+2%28pi%29r since D = 2r.
You want to find the radius, so use:
C+=+2%28pi%29r and solve this for r. Divide both sides by 2%28pi%29
r+=+C%2F2%28pi%29 Substitute 42" for C and 3.14 for %28pi%29
r+=+42%2F2%283.14%29
r+=+6.687898 Round to nearest 1/100th
r = 6.69 inches.
Each spoke is 6.69 inches