a classroom is 7m long,6.5 m wide,4m high.it has one door 3m *1.4 m and three windowseach measuring 2m *1m.the interior walls are to be colour washed.the contractor charges rs 5.25 per m square.find the cost of colour washing
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a classroom is 7m long 6.5 m wide 4m heigh
(l*b)*h=(7m*6.5)*4m=455m*4m=1820m
3m*1.4=4.2m window
2 x 1 m=2m
(l*b)*h=(7m*6.5)*4m=455m*4m=1820m
3m*1.4=4.2m window
2 x 1 m=2m
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