Jawabanmu

2014-09-04T10:35:53+07:00
Dik 
skala = 2
F1 =  4 kotak x skala = 8
F2 = 3 kotak x skala = 6 

FR =  \sqrt{ F1^{2} + F2^{2} } =  \sqrt{ 8^{2} +   6^{2}  } =  \sqrt{64 + 36} =  \sqrt{100}  = 10

Semoga membantu ^_^