AMC 8 2003 Problem 21
AMC8 2003 年第 21 题
四边形与多边形★★★★☆
Problem The area of trapezoid is . The altitude is 8 cm, is 10 cm, and is 17 cm. What is , in centimeters?
梯形 ABCD 的面积是 164 平方厘米，高为 8 厘米，AB 的长为 10 厘米，CD 的长为 17 厘米。则 BC 的长为多少厘米? Problem 22 The following figures are composed of squares and circles. Which figure has a shaded region with largest area? 下图是由正方形和圆组成的图形。哪个图形的阴影部分的面积最大？
- A.9
- B.10
- C.12
- D.15
- E.20
正确答案 · Correct Answer
B
解析 · Solution
解析整理中
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