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Filename: controllers/formulas.php

Line Number: 37

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Radius is a line segment from the center of the circle to the edge of the circle. Therefore, when radius of a circle is given the diameter is calculated by:

D = 2r, Where r = radius of a circle

Circumference is the distance around the circle. Therefore, when the circumference is known diameter can be calculated as follows:

D = C/π, Where C = circumference of the circle

π = pie, approximately equal to 3.14

When the area of the circle is given, then the diameter of the circle can be calculated by following:

D = √(4A/π), Where A = area of the circle

π = pie, equal to 3.14

=> Therefore, the diameter can be calculated as follows: D = C/π

=> Therefore, the diameter can be calculated as follows: D = √4A/π