Answer:
Solution given:
base[b]=2m
height[p]=?
hypotenuse [h]=7m
By using Pythagoras law
h²=p²+b²
p=[tex]\sqrt{h²-b²}=\sqrt{7²-3²}=2\sqrt{10} or\:\:6.3m[/tex]
height of the wall is 6.3m.