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If by an 8 inch circle, you mean that the circumference is 8 inches, then

the radius would be found using:

C =pi x diameter

8 =3.14 x diameter

8/3.14= diameter

and since diameter = 2 x radius

2.55 = 2 x radius

2.55/2 = radius

therefore, the radius is approximately 1.27 inches

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16y ago
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15y ago

The diameter is the radius squared, so the diameter is 16. 16 radius is 1/2 across and diameter is across. Acording to its roots dia means across and meter means measure.

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13y ago

4 inches. The radius is half of the diameter

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14y ago

4"

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15y ago

200.96 ft

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Q: If the radius is 8 what is the diameter?
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