TheApricots TheApricots

03-09-2016
Mathematics

Answered

A circle has a circumference of 81.64cm. What is its Radius?

Verified Answer :

Anonymous Anonymous

03-09-2016

\(circumference = 2 * \pi * radius\)

\(\pi = 3.14\)

\(Substitute \ 3.14 \ for \ \pi\)

\(81.64 cm = 2 * 3.14 * radius\)

\(81.64cm / (2 * 3.14) = radius\)

\(81.64cm / 6.28 = radius\)

\(13 cm = radius\)

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