Question

A 15m long ladder reached a window 12m high from the ground on placing it against a wall at a distance a meters from the walls find the distance between their tops with diagram

Answer 1

By Pythagoras theorem,

(15)²=(12)²+distance ²

225=144+distance ²

225-144=81=distance²

√81=distance ²

9 = distance

Wall is far away from the ladder by 9 metre