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11-11-2016
Mathematics

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If the radius of a circle is 11 cm, what is the area of the circle?

a)484 π
b)121 π
c)22 π
b)44 π

Respuesta :

11-11-2016

Area of a circle equals πr^2, so
A = 3.14(11^2)
3.14(121) = 379.94, rounded to 380.
Divide 379.94/π equals 121.

Your answer is B.

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