A ladder of $3.9 m$ length is laid against a wall. The distance between the foot of the wall and the ladder is $1.5 m$ . Find the height at which the ladder touches the wall.

3.6

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4.55

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4.82

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5.7

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Solution

The correct option is B $3.6$ m
base distance = $1.5 m$
hypotenuse distance = $3.9 m$
height= $\sqrt{({3.9}^{2} - {1.5}^{2})}$
= $\sqrt{(15.21 - 2.25)}$
= $\sqrt{12.96}$
= $3.6 c m$

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A ladder of 3.9m length is laid against a wall. The distance between the foot of the wall and the ladder is 1.5m. Find the height at which the ladder touches the wall.

The correct option is B 3.6mbase distance = 1.5m hypotenuse distance = 3.9m height= √(3.92−1.52) =√(15.21−2.25) =√12.96=3.6cm

A ladder of $3.9 m$ length is laid against a wall. The distance between the foot of the wall and the ladder is $1.5 m$ . Find the height at which the ladder touches the wall.

The correct option is B $3.6$ m
base distance = $1.5 m$
hypotenuse distance = $3.9 m$
height= $\sqrt{({3.9}^{2} - {1.5}^{2})}$
= $\sqrt{(15.21 - 2.25)}$
= $\sqrt{12.96}$
= $3.6 c m$