Homework Help: Math quest3

Posted by Marco on Tuesday, February 19, 2013 at 8:46pm.

The formula for the surface area of a sphere is 4(3.14)r^2. What is the surface area of a ball with a diameter of 6 inches round? Round to nearest inch.
I got. 113.04 Rounded is 113 inch

Math quest3 - Reiny, Tuesday, February 19, 2013 at 8:59pm
yes,

according to calculator value of π
SA = 113.097...

most calculators have π built in, why not use it ?

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