www.mathwords.com about mathwords website feedback Segment of a Circle A part of the interior of a circle bounded by a chord and an arc. 1/2 x R(squared) x ((pi x theta/180) - sin theta) In which R is the circle radius and theta is the angle ( in degrees) which is subtended by the chord (which together with the arc form the boundaries of the partial circle. Note that a value of theta of 180 degrees leads to pi (R squared)/2, or one half the area of a circle.
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The formula for double the area of a circle
Circumference of a circle is (pi * diameter). Area of a circle is (pi * r2).
The formula for the area of a circle is: Area = π x r2 (r is the radius and Pi is about 3.1416). The result is expressed in square units.
The formula for the area of a circle is πr^2, where π (pi) is a mathematical constant approximately equal to 3.14159, and r is the radius of the circle. So, "pi r squared" refers to the area of a circle, calculated by multiplying π by the square of the radius. This formula is fundamental in geometry and mathematics for finding the area enclosed by a circle.
If the radius of the circle is R, then the area of the whole circle is πR2 So the area of the semicircle is 0.5*πR2