live4dramaoy0yf9
live4dramaoy0yf9
05.10.2021 • 
SAT

the top of a ladder slides down a vertical wall at a rate of 0.375 m/s. at the moment when the bottom of the ladder is 5 m from the wall, it slides away from the wall at a rate of 0.9 m/s. how long is the ladder?

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