Area pathways — lesson. Mathematics CBSE, Class 7.

UPSKILL MATH PLUS

Learn Mathematics through our AI based learning portal with the support of our Academic Experts!

The fundamental idea about the area of pathways

We should observe the circular shapes around us where we need to find the area of the pathway.

The area of the pathway is the difference between the area of the outer circle and inner circle.

Let ‘\(R\)’ be the radius of the outer circle, and ‘\(r\)’ be the radius of the inner circle.

Therefore, the area of the circular pathway,

\begin{array}{l} = π R^{2} - π r^{2} \\ = π (R^{2} - r^{2}) sq . units \end{array}

Important!

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

π r^{2}

Here \(r\) is the radius of the circle.

Circumference of the circleis

2 π r

Here \(r\) is the radius of the circle.

Did you find an error?

1. Area pathways