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The outer edge of the dime is about 55mm. What is the approximate length of the radius?

The outer edge of the dime is about 55mm. What is the approximate length of the radius?
asked 58.5k views
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The outer edge of the dime is about 55mm. What is the approximate length of the radius?

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User Kingiol
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1 Answer

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To find the approximate length of the radius, you will use the formula for finding the circumference of a circle and solve for the radius (r).

C = 2 x pi x r
55 = 2 x 3.14 x r
55 = 6.28 x r
6.28 6.28
r = 9.2 mm

The approximate radius is 9.2 mm.
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User Mpjan
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