【单选题】
网考网参考答案：B
网考网解析：
The area of the large circle is πR 2 and the area of the small circle is πr 2 , so the area of the shaded region is πR 2 -πr 2 = π(R 2 -r 2 ). Since the shaded region and the white region have the same area, which is less than 1.5. Column B is greater. document.getElementById("warp").style.display="none"; document.getElementById("content").style.display="block"; 查看试题解析出处>>
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