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Circumference = pi x diameter so if the radius is 5 then the diameter is 10
Circumference = pi x 10 = 31.415
If we triple the radius to 15, then the diameter is 30, so
Circumference = pi x 30 = 94.245
Which looks like triple the first circumference. So if the radius is tripled, the circumference is also tripled.
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Earn +20 ptsQ: If the radius of a circle is tripled what happens to the circumference?
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