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Mathematics 13 Online
OpenStudy (maddog3354):

A circle has a radius of 20 cm. = 3.14 What is its perimeter (to the nearest tenth)? cm. What is its area (to the nearest tenth)? cm^2.

OpenStudy (mathmale):

Have you looked up the formulas for the perimeter and area of a circle as functions of the length of the radius? If not, please do so. Type your formulas here. Then we'll get down to the calculations.

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