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October 25, 2014

October 25, 2014

Posted by **Brittany** on Sunday, April 25, 2010 at 10:34pm.

- geometry -
**Brittany**, Sunday, April 25, 2010 at 10:56pmπd is the circumference of a circle, so with a diameter of 4 a single circle has a circumference of 4π. 1/3 of each circle is in contact with the belt, so that total part is still 4π. Then, the part of the belt connecting from tangent to tangent is 2 radii, so 3 areas is 12. The belt would then be 12+4π cm.

- geometry -
**Anonymous**, Sunday, May 12, 2013 at 9:56pmClick the correct answer.

Listen

3.

Which is greater, the circumference of a circle with radius 3 ft, or the distance around a semicircle with diameter 16 ft? By how much?

A. circle, by 4 ft

B. circle, by 2 ft

C. semicircle, by 4 ft

D. semicircle, by 2 ft

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