Question

A ladder 17 m long reaches a wall of 15m. how far is the foot of the ladder from the wall?​

Answer 1

Answer:

Using pythagorus theorem

H²=p²+b²

17²=15²+b²

B²=289-225

B²=64

B=8cm

It is 8 cm far.

Answer 2

Answer:

The ladder will form a right angled triangle with the wall with hypotenuse 17m and one side 15m. We have to find the third side

Use Pythagoras theorem

17^2=15^2+x^2

x^2=17^2-15^2

289-225

64

x=root64

ans--8metre

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