Q15 of 27 Page 289

Two rods of 13m. length and 7m. length are situated perpendicularly on the ground and the distance between their foots is 8m. The distance between their top parts is

The situation can be depicted by figure given below:



Here AD and BC are two rods.


Distance between top CD can be given by Pythagoras theorem.


By applying Pythagoras theorem in ΔCED, we get,


h2 = p2 + b2


⇒ CD2 = 62 + 82


⇒ CD2 = 36 + 64


⇒ CD2 = 100


⇒ CD = √100 = 10 cm

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Let us write whether the following statements are true or false:

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