What is the formula for finding the area of a semi-circle. The formula to find a circles area p radius 2 usually expressed as p r 2 where r is the radius of a circle. P Pi times the Radius squared.
What is the area of this circle.
A straight line which passes through the centre and its endpoints lie on the circle is called the diameter of a circle. Or when you know the Diameter. The area of a regular polygon is half its perimeter multiplied by the distance from its center to its sides and the corresponding formulathat the area is half the perimeter times the radiusnamely A 1 2 2pr r holds in the limit for a circle. What is the area of this circle.