The rectangular box shown in the figure has dimensions 8" × 7" × 4" (a = 8, b = 7, c = 4). approximate the angle θ formed by a diagonal of the base and a diagonal of the 7" × 4" side. (round your answer to two decimal places.)

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