I will give brainiest to whoever answers correctly !!

What is the length of the missing leg in this right triangle? 18 mm 24 mm 26 mm 32 mm

An architect is designing a water fountain for a park she uses the given function to model the water jet flowing from the fountain nozzles where h(x) gives the height of the water jugs in feet x feet from the starting point h(x)=-1/20x+x+15

Ahiking trail is 6 miles long. it has 4 exercise stations, spaced evenly along the trail. what is the distance between each exercise station?