Question

Calculati perimetrul triunghiului ABC stiind ca :AB=0,45 dm,AC =55mm si BC =4,8 cm.

Answer 1

$P_{ABC}=AB+AC+BC \\ AB=0,45 \ dm \\ AC=55 mm=5,5 \ cm=0,55 \ dm \\ BC=4,8 \ cm=0,48 \ dm \\ P_{ABC}=0,45 \ dm+0,55 \ dm+0,48 \ dm \\ \Rightarrow \boxed{\bold{P_{ABC}=1,48 \ dm}}$