Answer:
D) [tex]\displaystyle 100π\:in^2[/tex]
Step-by-step explanation:
In the circumference, 20 represents the diameter, and the radius is half the diameter, so take half of it to get 10. Then use it in the area formula:
[tex]\displaystyle πr^2 = A \\ \\ π10^2 = 100π[/tex]
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