英语翻译A circle of radius 2 rolls completely around the inside perimeter of a square of side 10.What distance is covered by the centre of the circle?

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英语翻译A circle of radius 2 rolls completely around the inside perimeter of a square of side 10.What distance is covered by the centre of the circle?

英语翻译A circle of radius 2 rolls completely around the inside perimeter of a square of side 10.What distance is covered by the centre of the circle?
英语翻译
A circle of radius 2 rolls completely around the inside perimeter of a square of side 10.What distance is covered by the centre of the circle?

英语翻译A circle of radius 2 rolls completely around the inside perimeter of a square of side 10.What distance is covered by the centre of the circle?
一个半经为2的圆在一个边(宽)为10的正方型中绕着周长滚一圈 ,问这个圆滚了多少距离

圈子半径2在正方形的里面周长附近完全地滚动边10。这个圆滚的距离是多少?

圈子半径2在正方形的里面周长附近完全地滚动边10。这个圆滚的距离是多少