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The central hall of a school is 80m long...

The central hall of a school is 80m long and 8m high. It has 10 doors each of size `3m xx1. 6 m` and 10 windows each of size `1. 5 m xx 1mdot` If the cost of white-washing the walls of the hall at the rate of `R s .1.20\ p e r\ m^2` is Rs. 2385.60, find the breadth of the hall.

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RD SHARMA ENGLISH-MENSURATION-II (VOLUMES AND SURFACE AREAS OF A CUBOID AND A CUBE)-All Questions
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