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Mathematics, 05.03.2020 22:18 Svetakotok
In construction , floor space is given for staircase. If a second floor is 270cm above the first floor and the contractor is using steps with 18cm rise and 30cm treat , how long will the railing goes from the first floor to the second floor
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In construction , floor space is given for staircase. If a second floor is 270cm above the first flo...
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