Rectangular prisms A and B are combined to create this model, The dimensions of Prism A are 6 by 9 by 3 millimeters.
The dimensions of Prism B are 6 by 7 by 6 millimeters.
What is the combined volume, in cubic millimeters, of Prisms A and B?

54 km / hours

step-by-step explanation:

we need to convert seconds to hours

60 seconds = 1 minutes

60 minutes = 1hour

15 m         60 second   60 minutes

  * *         = 54000 meters/ hour

second     1 minute             1 hour

now we need to convert meters to km

1000 m = 1 km

54000 m       1 km

*   = 54 km / hours

hour               1000m

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step-by-step explanation: