<PRE><B>Question 209195</B>
To write the answer in terms of pi means NOT to use 3.14 for pi.

Circumference formula:

C = pi times diameter

You were given the radius to be 5 cm.

The diameter is TWICE the radius or 10 cm.

C = 10pi

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The area of a circle is given by A = pi(r^2).

Just plug and chug.

A = pi(5^2)

A = 25pi

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