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If a 10m ladder stands 1.25m from a wall, what is it's reach?

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1.25^2 + b^2 = 10^2

1.5625 + b^2 = 100

b^2 = 98.4375

b = ?

the ladder will 9.9m on the wall

10 meters - 1,25 = 8,75

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