A 15m long ladder is kept at a distance of 9 meters away from a wall in slanting
position. Calculate how high above the ground will the ladder reach?
(1) 8m
(2) 13m
(3) 12m
(4) 9m
Answers
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In ∆APC by Pythagoras theorem
Hyp² = Adj² + Opp²
CP² = CA² + AP²
CA² = 15² - 9²
CA² = 225 - 81
CA² = 144
CA = 12m
The option (3) ✔✔✔
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