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21. The central hall of a school is 80m long and 8m high. It has 10 doors each of size 3m 1.5m and 10 windows each of size 1.5m1m. If the cost of white washing the walls of the hall at the rate of Rs 1.20 per m is Rs 2385.60 find the breadth of hall |
| Answer» 21. The central hall of a school is 80m long and 8m high. It has 10 doors each of size 3m 1.5m and 10 windows each of size 1.5m1m. If the cost of white washing the walls of the hall at the rate of Rs 1.20 per m is Rs 2385.60 find the breadth of hall | |