The fundamental idea about the area of pathways
  • We should observe the circular shapes around us to find the area of the pathway.
  • The area of the pathway is the difference between the area of the outer circle and the inner circle.
  • Let ‘\(R\)’ be the radius of the outer circle, and ‘\(r\)' be the inner circle radius.
Therefore, we can derive the area of a circular pathway as below.
  • The circle is a round plane figure whose boundary (the circumference) consists of points equidistant from the fixed point (the centre). 
  • Area of the circle is the region enclosed by the circle.
  • Distance around the circular region is called the circumference or perimeter of the circle.
Recollect the formula:
  • Area of the circle is πr2.
  • Circumference of the circle is 2πr.
  • Here \(r\) is the radius of the circle.