Question

Help,Please go step by step​

Answer 1

D)
`\displaystyle 100π\:in^2`

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:

`\displaystyle πr^2 = A \\ \\ π10^2 = 100π`

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