A 15m long ladder reached a window 12m heigh from the ground on placing it against a wall at a distance a, find the distance of thr foot of the ladder from the wall
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Step-by-step explanation:
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Step-by-step explanation:
Pythagorean Therom ⇒ Base² + Height² = Hypotenuse²
⇒ 12² + Height² = 15²
⇒ 144 + Height² = 225
⇒ Height² = 225 - 144
⇒ Height² = 81
⇒ Height = √81
⇒ Height = 9m
∴The distance of the foot of the ladder from the wall is 9m
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