Step 1. Find the total area of the circle using the formula:

Where r is the radius of the circle, in this case:

and π is a constant:

Substituting r and π into the formula for the area:

And solving the operations:

Step 2. Find the are of the sector.
The sector is the part of the circle with an angle of 300°. We know that the total circle has 360°, thus, to find the area of the sector we have to divide the total area of the circle by 360, and then multiply by 300:

Solving the operations:


Answer: the area of the sector is
