SOLUTION: The circumference c of a circle varies directly as its diameter d, which may be expressed by the equation c=kd. If the circumference of a circle with a 10-inch diameter is given as
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Question 1109384: The circumference c of a circle varies directly as its diameter d, which may be expressed by the equation c=kd. If the circumference of a circle with a 10-inch diameter is given as 31.416 inches, what is the circumference of a circle whose diameter is 8 inches. Answer by rothauserc(4718) (Show Source):
You can put this solution on YOUR website! c = kd
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31.416 = k * 10
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k = 31.416 / 10 = 3.1416
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c = (3.1416) * 8
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c = 25.1328
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the circumference of a circle whose diameter is 8 inches is 25.1328
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