kate106 kate106

30-01-2017
Mathematics

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the point (3, 0) lies on a circle with the center at the origin. What is the area of the circle to the nearest hundredth?

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staramarina staramarina

30-01-2017

Area of a circle is π·r²
The center of the circle is at the origin (0,0) and there is a point at (3,0)
This means that the radius (r) of the circle is 3.
Therefore the area of the circle is 9π or 28.27

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