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What is the circumference and radius of the circle if the diameter is 12 inches?
Wiki User
∙ 12y ago
r = 1/2d, where r is radius and d is diameter.
C = d x pi, where C is circumference, d is diameter, and pi is 3.14159.
r = 1/2 x 12in = 6in
C = 12in x 3.14159 = 38in (rounded to two significant figures. (37.69908)
Wiki User
∙ 12y ago
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