如图,已知P为反比例函数y=4/x(x>0)上一点,以P为圆心,OP为半径画圆,⊙P与x轴相交于点A,且点A的坐标为(4,0).(1)求出⊙P的半径.(2)求图中阴影部分的面积.
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![如图,已知P为反比例函数y=4/x(x>0)上一点,以P为圆心,OP为半径画圆,⊙P与x轴相交于点A,且点A的坐标为(4,0).(1)求出⊙P的半径.(2)求图中阴影部分的面积.](/uploads/image/z/5572150-70-0.jpg?t=%E5%A6%82%E5%9B%BE%2C%E5%B7%B2%E7%9F%A5P%E4%B8%BA%E5%8F%8D%E6%AF%94%E4%BE%8B%E5%87%BD%E6%95%B0y%3D4%2Fx%EF%BC%88x%EF%BC%9E0%EF%BC%89%E4%B8%8A%E4%B8%80%E7%82%B9%2C%E4%BB%A5P%E4%B8%BA%E5%9C%86%E5%BF%83%2COP%E4%B8%BA%E5%8D%8A%E5%BE%84%E7%94%BB%E5%9C%86%2C%E2%8A%99P%E4%B8%8Ex%E8%BD%B4%E7%9B%B8%E4%BA%A4%E4%BA%8E%E7%82%B9A%2C%E4%B8%94%E7%82%B9A%E7%9A%84%E5%9D%90%E6%A0%87%E4%B8%BA%EF%BC%884%2C0%EF%BC%89.%EF%BC%881%EF%BC%89%E6%B1%82%E5%87%BA%E2%8A%99P%E7%9A%84%E5%8D%8A%E5%BE%84.%EF%BC%882%EF%BC%89%E6%B1%82%E5%9B%BE%E4%B8%AD%E9%98%B4%E5%BD%B1%E9%83%A8%E5%88%86%E7%9A%84%E9%9D%A2%E7%A7%AF.)
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