Question

urgent please answer​

Answer 1

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By Pythagoras theorem, we have

AC² = AB² + BC²

(15)² = (12)² + BC²

225 = 144 + BC²

BC² = 81

BC = √81

BC = 9m

So your base is of 9 m.

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➪ The distance of the foot of the ladder from wall is 9m.

Answer 2

$\mathfrak{Question}$

A 15m long leader reached a window 12 metre height from the ground and placing it against a wall at a distance a. Find the distance of the foot of leader from the wall.

$\bold\blue{Answer}$

By Pythagoras theorem:-

➺ AC² = AB² + BC²

➺ (15)² = (12)² + BC²

➺ 225 = 144 + BC²

➺ BC² = 225 - 144

➺ BC² = 81

➺ BC = √81

➺BC = 9 cm.

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➦ What is phythagoras theorem?

➳ In a right triangle the square of hypotenuse is equal to sum of square of the other two sides.

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