Question

8. A ladder is placed against a wall such that its top reaches upto a height of 4 m of the
wall. If the foot of the ladder is 3 m away from the wall, find the length of the ladder.​

Answer 1

Answer:

The ladder and the wall make a structure like a right angled triangle where ladder is the hypotenuse, the floor is base and wall, height.

therefore, by Pythagoras thm,

(length of ladder)^2=

(base)^2+(height)^2

= 4^2+3^2

=16+9

=25

length of ladder^2=25

length of ladder =√25=5m.

therefore the answer is 5 m.

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