Area of Circle Worksheet - Math Online Tutoring

Area of Circle Worksheet - Math Online Tutoring A circle is a geometric figure which is formed when a curve completes a rotation and where the starting andthe ending points of the curve meet together. A circle is a geometric shape which has no vertices like anyother geometric shape. Area of a circle is the portion covered inside the circle bounded by its curve. Example 1: Calculate the area of the circle if the diameter of the circle is 14m. Given diameter of the circle, d = 14m In a circle, diameter is the line passing from one point to another point on the curve and passing through thecenter of the circle. Radius of the circle is the line joining from the center of the circle to any other point on the curve of the circle. Hence radius, r = diameter/2 = 14m/2 = 7m Area of the circle formula, A = * (radius)2 Hence A = (3.14) * (7m)2 = 153.86m2 Area of the given circle, A = 153.86m2 Example 2: Calculate the area of the circle if the diameter of the circle is 20m. Given diameter of the circle, d = 20m Radius of the circle is the line joining from the center of the circle to any other point on the curve of the circle. Hence radius, r = diameter/2 = 20m/2 = 10m Area of the circle formula, A = * (radius)2 Hence A = (3.14) * (10m) 2 = 314m2 Area of the given circle, A = 314m2