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January 28, 2015

January 28, 2015

Posted by **barb** on Sunday, February 27, 2011 at 3:41pm.

- calculus -
**MathMate**, Sunday, February 27, 2011 at 5:50pmThe area of a circle of radius r is given by

area = πr²

So if

radius = 12 inches, then

Area = (22/7)*12² square inches

= (22/7)*144 square inches

= 453 square inches.

Can you try calculating with r=15 inches?

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