Answer:
8.6 feet
Step-by-step explanation:
We solve this using Pythagoras Theorem
a² + b² = c²
c = Longest side of a right angled triangle = Hypotenuse
From the question
Length of the fence = a = 5 feet
Distant from the base of the fence = b = 7 feet
Length of the leash = Hypotenuse = c
Hence,
5² + 7² = c²
c² = 25 + 49
c = √74
c = 8.602325267 feet
Approximately to the nearest tenth of a foot the length of the leash = 8.6 feet
