Answer:
[tex]100 \pi \: m^2[/tex]
Step-by-step explanation:
The area of a circle is [tex]\pi r^2[/tex].
The diameter is 20m, the radius is half of the diameter, so the radius will be 10m.
[tex]\pi \times 10^2[/tex]
[tex]\pi \times 100[/tex]
The area should be in terms of [tex]\pi[/tex], so the final answer will be:
[tex]100 \pi \: m^2[/tex]
