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A fitness square wants to build a circular fountain pool of 64 pi square meters. Try to determine the radius of the pool.

Um ... . I wonder how to calculate the radius upstairs. . .

Popularize primary school knowledge:

Radius: r

Area: s

π: Pi is usually about 3. 14.

S= π r^2

So the radius of this pool is about 4.37 meters.

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