A power unit is there by the bank of the river of 750 mtrs
wide. A cable is made from power unit to power plant
opposite to tht of the river and 1500 mtrs away from the
power unit. the cost of cable above water and below water
is Rs12 and Rs 15. Find the total cost for cable laying ?
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cost for length in the water=750*12=9000
cost for length out of water=(1500-750)*15=11250
total cost==11250+9000=20250
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