Question

A leader is placed against a wall in such a way that it's foot is at distance of 9m from the wall and it's top reaches a window 12m above the ground in the wall find the length of the ledder. 

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Answer 1

Hey mate...

here's the answer...

Height of wall = 12m

Distance from the ladder to wall = 9m

(12)^2 + (9)^2 = (x)^2

144 + 81 = (x)^2

225 = x^2

15 = x

Height of ladder

= 15 m

Hope it helps ❤️

Answer 2

Answer:

15m

Explanation:

Distance of ladder fron the wall = 9m

Height of wall = 12 m

so squaring

9^2+12^2=x^2

81+144=x^2

225=x^2

15=x

x=15m