Question

A 20m ladder is placed against a wall in such a way that the foot of the ladder is 16 m away from the wall.How up the wall is the upper end of the ladder?Show me the calculation​

Answer 1

Answer:

12 m

Step-by-step explanation:

length of ladder = 20 m

distance between the foot of the ladder and the wall = 16 m

let the height of the wall be 'h' m

pythagoreas theorem =  altitude2 + base2 = hypotenuese2

h2 + 16^2 = 20^2

h2 = 400 - 256

h2 = 144

h = 12 m

the height of the wall is 12 m

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Answer 2

h²= 20²- 16²

h=400- 256

.

h=.

$\sqrt{400 - 256}$

h

$h = 12$