Enter the radius, diameter, circumference or area of a circle to find the other three. Calculate the area, circumference, radius and diameter of circles. The area of a circle is the space enclosed within the boundary of a circle.
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It is expressed in square units such as m 2, cm 2, etc. The area of a circle can be found using the. The area of a circle calculator helps you compute the surface of a circle given a diameter or radius.
See how to calculate the area below, but first the calculator:
Given any 1 known variable of a circle, calculate the other 3 unknowns. To find the area of a circle, use the formula a = π • r2, where r is the radius of the circle. Calculate area of circle instantly using radius, diameter, or circumference. The region shaded in gray inside of circle a above is its area.
It is measured in square units. Find a, c, r and d of a circle. Area of a circle the area of a circle is the plane region bounded by the circle's circumference. If you only know the diameter of the circle, then use the formula a = π • (d/2)2 where d is diameter.
Although often referred to as the area of a circle in informal contexts, strictly speaking, the term disk refers to the interior region of the circle, while circle is reserved for the boundary only, which is a.
It is calculated using the formula a = πr^2, where 'r' is the radius of the circle.
