Firefighter's Water Stream Strike Height Calculation

[jitto92]

Homework Statement

A firefighter, 44.0 m away from a burning building, directs a stream of water from a ground level fire hose at an angle of 31.2° above the horizontal. If the speed of the stream as it leaves the hose is 40.0 m/s, at what height will the stream of water strike the building?
v=40.0m/s
v(x)=vcos31.2
v(y)=vsin31.2
g=9.81

Homework Equations

R=(vsin^2(31.2))/g
x(t)=vcos(31.2)

The Attempt at a Solution

I have tried breaking it down to x and y components but it doesn't make sense if the height of the building and its distance from the firefighter is not given !

 

[Doc Al]

I have tried breaking it down to x and y components but it doesn't make sense if the height of the building and its distance from the firefighter is not given !

(1) The distance from the firefighter is given.
(2) You don't need the height of the building, just the height of the stream as it hits the building.