Ladder 10 meters long is staying against the wall so that its bottom edge is 6 meters away from the wall. What height reaches ladder?

Result

h =  8 m

#### Solution:

$c = 10 \ m \ \\ a = 6 \ m \ \\ h = \sqrt{ c^2-a^2 } = \sqrt{ 10^2-6^2 } = 8 = 8 \ \text{ m }$

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