Question

A circular flower bed is surrounded by a path `4 m` wide. The diameter of the flower bed is `66 m.` What is the area of this path ? `(pi=3.14)`

Answer 1

If we create a diagram, we have two circles.
One outer circle that is surrounded with `4m` wide path and inner circle that is circular flower bed.
Diameter of flower bed ` = 66m`
Radius of inner circle(flower bed) ` r = 66/2 = 33m`
Radius of outer circle ` R = 33+4 = 37m`
So, Area of the path, A = Area of outer circle - Area of inner circle
`A = pi(R^2-r^2) = 3.14(37^2 - 33^2) = 280**3.14 = 879.2 m^2`