平行四边形被分成3个不同的三角形

平行四边形被分成两个三角形每个三角形面积都是270 平方米一个高是22.5m一个高是18m求平行四边形的周长

解    平行四边形的宽=270÷22。 5×2                                                                 =24 米                                                                           长=270÷18×2                                                                 =30米                                                 ...全部

  解    平行四边形的宽=270÷22。
  5×2                                                                 =24 米                                                                           长=270÷18×2                                                                 =30米                                                      所以平行四边形的周长=2（长 宽）                                                                          =2×（24 30）                                                                    =108米。收起