A rope goes from one building to another. The distance between the buildings is 12m, and the rope is tied at each building at a point 8m and 3m from the ground. Find the length of the rope.

Answer 1

Did you make a sketch?
draw a horizontal at the 3 m height, and you will get a right-angled triangle with sides 12 and 5.
You might recognize the 5-12-13 right-angled triangle, if not ...
h^2 = 5^2 + 12^2
= 25 + 144
= 169
h = √169 = 13 m

Answer 2

no

Answer 3

13