if two adjacent sides of parallelogram are 10m and 5m. the distance between longer sides are 4m and what is the distance between the shorter side

let the height of the shorter sides be x.
area of the parrallelogram from its base =base*height
                                          =  10m*4m=40m2
​the distance between the shorter sides are=5m*x=40m2
​x=405
x=8