calculate d area of a cirular path 3m wide surrounding a cirular plot of radius 20m
calculate the area of a circle with 23 m - area of circle with 20 m.
= (23^2)π - (20^2)π
= .....
To calculate the area of a circular path surrounding a circular plot, here's what you can do:
1. First, calculate the area of the larger circle, which is the circular plot with a radius of 20m.
- The formula to calculate the area of a circle is A = π * r^2, where A is the area and r is the radius.
- So, for the circular plot, the area would be A1 = π * (20m)^2.
2. Next, calculate the area of the smaller circle, which represents the circular path inside the plot.
- Since the circular path is 3m wide, its radius would be 20m (radius of the plot) + 3m (width of the path).
- So, the radius of the path (r2) would be 20m + 3m = 23m.
- Using the same formula as before, the area of the circular path (A2) would be π * (23m)^2.
3. Finally, to find the area of the circular path itself, subtract the area of the smaller circle (A2) from the area of the larger circle (A1).
- The area of the path (A) = A1 - A2.
Now, let's calculate:
- Area of the circular plot (A1) = π * (20m)^2
- Area of the circular path (A2) = π * (23m)^2
- Area of the path (A) = A1 - A2
Plug in the values and use the appropriate number for Pi (π) to get the final answer.