Joseflin 发表于 2008-5-8 15:42:00

【基礎級練習題86】

1. a 之直徑值為何?<br/>&nbsp;&nbsp;&nbsp; (A) 40.4018&nbsp;&nbsp; (B) 40.4108&nbsp;&nbsp; (C) 40.4801<br/>2. b 之長度為何?<br/>&nbsp;&nbsp;&nbsp; (A) 18.2162&nbsp;&nbsp; (B) 18.2216&nbsp;&nbsp; (C) 18.2612

yu10cheng2 发表于 2008-5-8 19:11:00

<p>1.a=40.3768</p><p>2.b=20.1884</p>

SHAONX 发表于 2008-5-28 22:58:00

<p>本题选择答案有误,我做了修改。</p><p>【基础级练习题86】求:<br/>1. a 之直径值为何?<br/>&nbsp;&nbsp;&nbsp; (A) 40.3678&nbsp;&nbsp; (B) 40.3768&nbsp;&nbsp; (C) 40.3867<br/>2. b 之长度为何?<br/>&nbsp;&nbsp;&nbsp; (A) 20.1884&nbsp;&nbsp; (B) 20.4881&nbsp;&nbsp; (C) 20.8841</p><p>【基础级练习题86】答案:<br/>1. a 之直径值 = 40.3768,就是(B)<br/>2. b 之长度 = 20.1884,就是(A)</p><p>本题的动画解题演示已经发表,见:</p><p><a href="http://bbs.mjtd.com/forum.php?mod=viewthread&tid=55192&extra=&page=9&amp;page">http://bbs.mjtd.com/forum.php?mod=viewthread&tid=55192&extra=&page=9&amp;page</a>=</p>

沙漠骆驼 发表于 2008-5-30 15:57:00

<p>圆的直径:40.3768</p><p>三角形边长:20.1884</p><p></p><p>回答完毕</p>
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