Answer:
Step-by-step explanation:
The conversion factor cancels units of miles and leaves units of km.
[tex]\dfrac{18\,mi}{h}\cdot\dfrac{1.609344\,km}{1\,mi}=\dfrac{28.968192\,km}{h}[/tex]
The speed rounds to 29 km/h.
Multiplying the distance per hour by the number of hours, we find the distance to be ...
(28.968192 km/h)×(2 h) = 57.936384 km ≈ 57.94 km
