一架秋千当他静止不动时,踏板离地一尺,将他向前推10尺,此时秋千的踏板离地5尺,如果这是秋千的绳索拉的很直,请问绳索有多长?

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• 一架秋千当它静止不动时，踏板离地1尺，将它向前推10尺，秋千的踏板就和人一样高，此人身高5尺，如果这时秋千的绳索拉得很直，请问绳索有多长？
• 一架秋千当他静止不动时,踏板离地一尺,将他向前推10尺,此时秋千的踏板离地5尺,如果这是秋千的绳索拉的很直,请问绳索有多长?
• 一架秋千当他静止不动时,踏板离地一尺,将他向前推10尺,此时秋千的踏板离地5尺,如果这是秋千的绳索拉的很直,请问绳索有多长?
• 一架秋千当它静止不动时，踏板离地1尺，将它向前推10尺，秋千的踏板就和人一样高，此人身高5尺，如果这时秋千的绳索拉得很直，请问绳索有多长？
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• x-0.01x=?正确了,