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Henry knows that the circumference of a circle is 18Pi inches. What is the area of the circle?
36 pi inches squared
81 pi inches squared
162 pi inches squared
324 pi inches squared

Respuesta :

snog

Answer:

81π

Step-by-step explanation:

Because the circumference is 18 pi the diameter is also 18 which means the radius is 9. This means that its area is 81 pi.

arjotkaur

Answer:

81 pi inches squared (Option B)

Step-by-step explanation:

C = 2 pi r

18 = two pi r

r = 9

Then use the radius to find the area of the circle which is 81 pi.

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