如图,15:00时,台风中心位于A市东300千米的B处,正以20千米每小时的速度向A市移动,与此同时

如图,15:00时,台风中心位于A市东300千米的B处,正以20千米每小时的速度向A市移动,与此同时,救援车队在A市北500米的C处,以100千米每小时的速度向A市行驶,... 如图,15:00时,台风中心位于A市东300千米的B处,正以20千米每小时的速度向A市移动,与此同时,救援车队在A市北500米的C处,以100千米每小时的速度向A市行驶,问至17:00时,救援车队与台风中心相距多远?
今晚就要,速度点哈
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mercuryconan
2010-09-27 · TA获得超过5710个赞
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题目有误,救援车队在A市北500米的C处,应为“救援车队在A市北500千米的C处,”吧。
√【(300-20*2)²+(500-100*2)²】≈397千米
yhw2279058
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画出图像。可知2小时后救援队到达离A市300千米的D处,台风到达离A市260千米的E处 连结DE 构成一个直角三角形 再使用勾股定理求出DE距离即可
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2010-09-28
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2010-09-29
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