# Area of polygon using radius calculator

# Area of polygon using radius calculator

To calculate the area of a polygon using radius, you need to know the number of sides, the length of the radius, and the length of the side. The formula for calculating the area of a regular polygon using the radius is:

**Area = (n × r^2 × sin(360/n))/2**

Where:

- n is the number of sides of the polygon
- r is the radius of the polygon
- sin is the trigonometric function sine

Here are the steps to calculate the area of a polygon using the radius:

**Determine the number of sides of the polygon.****Measure the length of the radius of the polygon.****Measure the length of one of the sides of the polygon.****Substitute the values of n, r, and s in the formula mentioned above.****Solve the equation to get the area of the polygon.**

Note: If the polygon is not regular, you cannot use this formula to find its area.

### Area of polygon using radius

To find the area of a regular polygon using the radius, you can use the following formula:

**Area = (n * r^2 * sin(360/n))/2**

where:

**n is the number of sides of the polygon****r is the radius of the polygon****sin is the sine function****360/n is the central angle of the polygon**

To use this formula, you need to know the value of n and the radius of the polygon. Then, you can substitute these values into the formula and calculate the area.