Respuesta :

AC= sqrot(12^2 + 8.4^2)= sqrot(5364/25) =6 sqrot(149)/5 ( Pyth. Theorem)
CD= sqrot(4.1^2 + 8.4^2) = sqrot(8737/100) = sqrot(87.37) ( pyth. Theorem)
12 + sqrot(149)/5 + 4.1 + sqrot( 87.37)