Question 377673
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Hi,
Let x represent how high is the top of the ladder
Applying the Pythagorean Theorem
5^2 + x^2 = 10^2
25 + x^2 = 100
x^2 = 75
{{{x = sqrt(75) = sqrt(25*5) = 5 sqrt(5)ft}}} (positive solution only appropriate here)
x = 11.18 ft, how high the top of the ladder is