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[img]2022m10x/ct_ve01204002j_0031_221018[/img]If each side of△ACD above has len
[img]2022m10x/ct_ve01204002j_0031_221018[/img]If each side of△ACD above has len
游客
2025-02-27
28
管理
问题
If each side of△ACD above has length 3 and if AB has length 1,what is the area of region BCDE?
选项
A、
B、
C、
D、
E、
答案
B
解析
The area of region BCDE is the area of △ACD minus the area of △ABE. Since AACD is equilateral, its area is
. △ABE is a 30-60-90 triangle with side lengths 1,
, and 2 and area
.Thus, the area of region BCDE is
The correct answer is B.
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