AMC 8 1987 Problem 22

AMC8 1987 年第 22 题

圆★★★★☆

Problem

ABCD

is a rectangle,

D

is the center of the circle, and

B

is on the circle. If AD=4 and CD=3, then the area of the shaded region is between

是一个矩形，

D

是圆的圆心，

B

在圆上。如果 AD=4 且 CD=3，则着色区域的面积在以下哪两个数之间？

AMC 8 1987 Problem 22 figure

A. $4\text{ and }5$
B. $5\text{ and }6$
C. $6\text{ and }7$
D. $7\text{ and }8$
E. $8\text{ and }9$

正确答案 · Correct Answer

D

解析 · Solution

解析整理中

继续练习

免费刷 1987 整卷 →登录解锁诊断（看你哪儿弱）→