A swimming pool is 20m long 15m wide and 3m deep. what will be the cost of repairing the floor and wall of the pool at the rate of rs.25 per square metre ?
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first to find total area:
area of floor=20*15=300 sq.m
area of long walls=3*20=60 sq.m
area of short walls= 3*15=45 sq.m
total area= 45+45+60+60+300=510 sq.m(there are 4 walls to long and 2 short)
so cost= 510*25=12750 rupees
area of floor=20*15=300 sq.m
area of long walls=3*20=60 sq.m
area of short walls= 3*15=45 sq.m
total area= 45+45+60+60+300=510 sq.m(there are 4 walls to long and 2 short)
so cost= 510*25=12750 rupees
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