Answer :
Pi × radius^2. Radius=20 m Pi × 20^2 Area= 400pi m^2
Answer: The required area of the given circle is [tex]400\pi~\textup{m^2}.[/tex]
Step-by-step explanation: We are given that the diameter of a circle i 40 m.
We are to find the area of the circle in terms of pie.
We know that
the AREA of a circle with radius of length r units is given by
[tex]A=\p r^2.[/tex]
Since the diameter of the given circle is 40 m, so the length of the radius is given by
[tex]r=\dfrac{40}{2}=20~\textup{m}.[/tex]
Therefore, the AREA of the circle is given by
[tex]A=\pi r^2=\pi\times 20^2=400\pi~\textup{m}^2.[/tex]
Thus, the required area of the given circle is [tex]400\pi~\textup{m}^2.[/tex]