Respuesta :

sreedevi102

Answer:

option 3

Step-by-step explanation:

[tex]circumference = 2 \pi r\\30 \pi = 2 \pi r\\\\r = \frac{30 \pi }{2 \pi} =15mm\\\\Area = \pi r^2 = \pi 15^2 = 225 \pi \ mm^2[/tex]

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