4 ml + 5 cl = ...... Cm^3 ???

4 ml + 5 cl = .....cm^3
= 4 + 5 × 10
= 4 + 50
= 45 cm^3

1 ml = 1 cm³ 
1 cl= 10 ml = 10 cm³
4 ml+ 5 cl =4 ml + 50 ml = 54 ml
                                        = 54 cm³
semoga bantu yaa