176 在半圆内接一个三角形,一边是直径上,俩直角边是6,8,求arch abc 的length.
小贝:直径为10,1/2(2π*5)
Wowoyypaopao:r=5, arch abc=5π
I think should be 5pai+10
举报
不用加上直径
题干问弧的长度
i think an arc length is different an arch length
arch length should including arc length and the base
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