Question

A pizza has a radius of 5 in. What is it's circumference?

Answer 1

`\displaystyle 31,415926536...\:in.`

Step-by-step explanation:

The radius is half the diametre, so double 5 to get this:

`\displaystyle \pi{d} = C \\ 10\pi = C \\ \\ 31,415926536... = C`

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Answer 2

31.4in

Explanation:

The formula is [ C = 2πr ].

C = 2π(5)

C = 10π

C = 10(3.14)

C = 31.4in

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