Circle Area

In the previous post we have discussed about Tenth Grade Math and In today's session we are going to discuss about Circle Area. Circle is studied under conic section it is a branch of mathematics and there are other conic sections like ellipse, hyperbola, etc. Circle is a kind of conic section or a kind of ellipse whose eccentricity is zero and its two foci are coincident.

We can also define circle as a simple shape in geometry having different points in the plane which are equidistant from a particular point which is called as center of circle and you should also know that distance between any of these points in the plane and center is known as radius.

For calculating area of circle we must know some of the terms related to circle:

Circumference of the circle is the distance around the circle. Diameter of the circle is the distance traveled across the circle through the center.

In calculation of area of circle we use a Greek letter called pi (π) and approx value of pi is 3.14.

Actually, if we understand the real meaning of area of circle then it is just the number of square units inside a circle. You just have to know the total number of squares in the circle and area of each square and only then by multiplying the area of Single Square and total number of squares, we can get area of circle.

But there is one easier formula for this:

A = π. R²,

Where 'A' is the area of circle and 'r' is the radius of circle. In calculations we use π = 3.14.

There is one fact which says that area of a circle is equals to area to the area of a triangle if the base of triangle is of the length of circle’s circumference and height is equal to the circle’s radius.

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