Answer:
8 metres
Explanation:
The nest, leaf and base of the tree are all points that form a right angle triangle.
The longest side is the distance from the nest to the leaf 17 m.
Using Pythagoras Theorem
17² = 15² + (distance from base to leaf)²
289 = 225 + (dist. 4rm base 2 leaf)²
289 - 225 = 64
64 = ( dist....base to leaf)²
Square root both sides
Dist from base to leaf = 8 meters