Question

A 17m long ladder reached a window 12 m high from the ground on placing it against a wall at a distance of X metre. Find X.

Answer 1

Explanation:

the ladder will form a right angled triangle with the wall in which the length of ladder is hypotenuse 17m long and distance of window from the ground is perpendicular 12m long.

now apply Pythagoras theorem to find base which is X metre long..

17² = 12² + X²

X² = 17² - 12²

X² = 145

X = √145

X = 12.04metre

X = 12 metre approximately

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