Answer:
90
Step-by-step explanation:
90 degree angle is a perfect square
Either way you still have the exact same amount of material length no matter if melted and remolded or simply cut
If you are trying to figure out the distance between the top of the tree and the end of the shadow, use a^2 + b^2 = c^2 where c is the hypotenuse and a and b are the legs of the right triangle.
5^2 + 4^2 = c^2
25 + 16 = c^2
41 = c^2
c = √41 = 6.4 meters
