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考试全军覆没，动画变简单，大小圆互转#学问分享官#
小圆半径是2cm,大圆的半径是3cm。现在先由小圆绕大圆转一圈，再由大圆绕小圆转一圈。那么圆心O1经过的路程（ ）圆心O2经过的路程；小圆扫过的面积（ ）大圆扫过的面积。（填“大于”“小于”“等于”）
圆（圆的认识）（圆的周长）（圆的面积）（环形面积）14/33
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