Question

What is the area of a circular path of 3m wide surrounding a circular plot of radius 20m?

Answer 1

Step-by-step explanation:

Radius of circle r=20m

diameter of circle=40

diameter of circle=40+2

circle path

=42

radius of circle =42/2

including path

R=21m

area of path=(are of circle include path) - (are

of circle without path)

=π R^2-πr^2

=π(R^2-r^2)

=π (21*21-20*20)

=3.14(441-400)

=3.14*41

=128.74m^2