Area of Circle
A circle is one of the most prominent two dimensional shapes. Online Geometry Tutoring provides you all the help for your homework. The surface covered by the interior of this shape is called as the area of circle. Like we have formulas for areas, we do have a formula for the area of a circle. Let us see what is the formula for the area of a circle. It is very simple unlike we have formulas in organic chemistry like cyanide formula. The formula for the area of a circle is A = πr2, where ‘r’ is the radius of the circle and π is a constant, an irrational number. The algebraic approximation of its value can reasonably considered as either 3.14 in decimals or as 22/7 in fraction.
The above formula cannot be derived that easily as we do in case of areas of squares or rectangles where we use the concept of unit squares. However, applying the Concept Of Calculus it can be derived easily. In...