Answer:
0.89 m is the answer
Explanation:
the wall, the ground and portion of pipe form a right angle triangle with pipe portion being the hypotenuse.
for a right triangle
![{hypotenuse}^(2) = {base}^(2) + {height}^(2)](https://img.qammunity.org/2022/formulas/mathematics/high-school/wqs4e16vstpzj3vykind4b1dxi7pzrfnjr.png)
here we have base = 3m and height = 2m.
thus
![{h}^(2) = {3}^(2) + {2 }^(2) \\ = 9 + 4 \\ = 13 \\ h = √(13)](https://img.qammunity.org/2022/formulas/mathematics/high-school/x9d4esaaaqcn1ux3pyqha4cw9kctr2k3ih.png)
portion of pipe overhanging = 4.5 - sqrt (13)
= 4.5 - 3.61
= 0.89 m