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how to derive formula for area of circle. Here p stands for the ratio of the diameter of a circle to its circumference and stands for the radius of the circle. You can create a modified version of the formula for the area of a circle using this relationship between circumference and radius.
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To find the area of the complete circle divide the circle into similar small triangles. N Substituting this for 2t. We get the area of the small triangle by substituting d.
Here the Greek letter p represents the constant ratio of the circumference of any circle to its diameter approximately equal to 314159.
The formula for area A A of a circle with radius r and arc length L L is. Area of Circle Formula. From the figure we see that The area of any triangle is half the base times height and since x is already half the base. Finally there are n triangles in the polygon so Given the apothem a.
