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Mathematics 8 Online
OpenStudy (anonymous):

In the circle a square is drawn with a radius of the circle as one side. What is the area of the circle coverd by the square? (The circle have a 8 length of diameter)

OpenStudy (anonymous):

the diameter is 8

OpenStudy (anonymous):

This is just a quarter of the total area of the circle (draw 3 more squares to see) 1/4 * pi 4^2 = 4 pi

OpenStudy (anonymous):

oh i got it

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