问题标题:
rectangularRhaslength30andwidth10.squareShaslength5.theperimeterofSiswhatfractionoftheperimeterof
问题描述:

rectangularRhaslength30andwidth10.squareShaslength5.

theperimeterofSiswhatfractionoftheperimeterof

冯国华回答:
  theperimeterofSis20   theperimeterofRis80   20/80=1/4   so,theperimeterofSis1/4oftheperimeterofR
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