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  • A ladder is standing against the wall. If the ladder reaches a height of 12m up the wall and has its foot 5m away from it, calculate the lengthof the ladder.

A ladder is standing against the wall. If the ladder reaches a height of 12m up the wall and has its foot 5m away from it, calculate the lengthof the ladder.

Answers (1)

AC is the length of the ladder. By Pythagoras theorem

AC^2=AB^2+BC^2

\\AC=\sqrt{AB^2+BC^2}=\sqrt{5^2+12^2}\\=\sqrt{25+144}=\sqrt{169}=13 \ m

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Safeer PP

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