find the third slide in simplest radical form. please tell me the formula i need to use to figure this problem out

3.

Step-by-step explanation:

By Pythagoras:

5^2 = 4^2 + x^2

x^2 = 26 - 16 = 9

x = 3.

goog may have it for you

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