Question

a 17 m long ladder reached a window 15m high from the ground on placing it against a wall at distance 'p' meters. Find the distance of foot of ladder from the wall

Answer 1

8m............do it with pythagorus theorm

Answer 2

applying pythagorus theorem we have 17^2-15^2=289-225=64
and square root of 64 is 8 so 8 m is the right answer