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The ratio of the two legs of a right triangle is 1 to 7. If the length if the hy
The ratio of the two legs of a right triangle is 1 to 7. If the length if the hy
游客
2024-01-12
42
管理
问题
The ratio of the two legs of a right triangle is 1 to 7. If the length if the hypotenuse of the triangle is
, then the perimeter of the triangle is between
选项
A、31 and 32
B、30 and 31
C、29 and 30
D、28 and 29
E、27 and 28
答案
B
解析
由勾股定理,直角三角形三边之比为1:7:
。已知斜边为
,那么两个直角边为2和14,周长为16+
≈30.14,故答案为B。
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