Question

A ladder 2.5 m long is placed against a wall. If its foot is 0.7 m away from the wall, how high up the wall does it reach?

Answer 1

Answer: 2.4 m

Step-by-step explanation: by Pythagoras theorem

(2.5)^2= (0.7)^2 + x^2

62.5= 4.9 + x^2

62.5 - 4.9 = x^2

57.6 = x^2

√57.6 = x

2.4 = x

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Answer 2

Answer:

Answer Expert Verified

Its foot is 0.7 m away from the wall. So, we have to find AB. Hence, 2.4 m high up the wall does it reach.