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Area of a Circle Calculator
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 The total space inside the boundary of the circle is known as the area of the circle. Area is measured in terms of square units. Area of a Circle Calculator takes the radius of a circle and calculates the area of the circle. Surface Area of a Circle is same as Area of a Circle since it is two dimensional figure.

## Step by Step Calculation

Step 1 :

Apply Formula for calculating the area of a circle  = π * r2.

Here, r = radius of circle.

Value of π = 3.142 or 22/7

Step 2 :

Put the values in the formula and find the area of a circle.

Step 3 :

Then we will get the desired result.

## Area of a Circle Problems

1. ### Find the area of circle with radius 7 cm.

Step 1 :

Given:

r = 7 cm.

π = 3.142 (fixed value).

Step 2 :

Formula:

Area of Circle = π * r2.

Put the values in the formula and find the area of a circle.

Area of Circle = 3.142 * (7 cm)2.

Step 3 :

So, multiply all these values

Area of Circle = 3.142 * 49 cm2.

Area of Circle = 153.93 cm2.

2. ### Find the area of circle with radius 5 cm.

Step 1 :

Given:

r = 5 cm.

π = 3.142 (fixed value).

Step 2 :

Formula:

Area of Circle = π * r2.

Put the values in the formula and find the area of a circle.

Area of Circle = 3.142 * (5 cm)2.

Step 3 :

So, multiply all these values

Area of Circle = 3.142 * 25 cm2.