CONVERT DIAMETER TO SQUARE INCHESModerator: convertme.com 

dvangossen wrote:convert 8 inch diameter into square inches
convert 6 inch diameter into square inches
Dirtman wrote:dvangossen wrote:convert 8 inch diameter into square inches
convert 6 inch diameter into square inches
Here are the formulas for determining the area of a circle when you have either the radius or the diameter:
PI * Radius^2
or
PI/4 * Diameter^2
I'll do the first circle. The diameter given is 8", so:
(3.1416/4) * 8 * 8 = 0.7854 * 64 = 50.27 square inches
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