Jawab dengan singkat

a) √12² + 15²  =  √144 + 225                 d)  √(16,4)² - (9,6)² = √268,96 - 92,16
                       =  √369                                                         = √176,8
                       =  19,2                                                          =  13,3 m

b)  √13² - 5²    =  √169 - 25                   e)  √8² - 6²  =  √64 - 36
                       =  √144                                             =  √28
                       =  12                                                 =  5,3

c)  √(10,6)² - (5,6)²  =  √112,36 - 31,36      f) √(7,2)² + (9,6)²  =  √51,84 +92,16
                               =  √81                                                      =  √144
                               =  9 inci                                                    =   12 kaki