【单选题】
网考网参考答案：C
网考网解析：
Since the entire region is a circle of radius 4, its area is π(4) 2 = 16π. The white region is a circle of radius 3 minus the small shaded circle of radius 1, so its area is 9π -π = 8π. Thus, the area of the white region is one-half of the total area, and the area of the shaded region is the other half. The columns are equal (C). document.getElementById("warp").style.display="none"; document.getElementById("content").style.display="block"; 查看试题解析出处>>
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