Answers

2015-01-05T19:19:16+05:30
volume of plank= 5m*25/100*10/100= 1/8=0.125 m^3
volume of pit = 20 *6*80/100=96m^3
no of planks = volume of pit /volume of plank =96/0.125  =768
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  • Brainly User
2015-01-05T19:22:36+05:30
Volume of one plank(v) = 5m x 0.25m x 0.1m = 0.125m³
volume of pit (V) = 20m x 6m x 0.8m = 96m³
no. of planks = V/v = 96/0.125 = 768 planks
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