find the cost of papering a room 8m long 6m wide and 4m high with paper 80cm wide at the rate of rs 120 per piece of 5m
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Answer:
Step-by-step explanation:
length=8m
width=6m
height=4m
area of papering a room=2h(l+b)+lb
=2 x 4(8+6)+8 x6
=2 x (32 +24)+48
=2 x 56 +48
=112+48
=160m^2
cost of papering per 5m = Rs 120
cost of papering per m =120/5
=Rs 24
cost of papering =160m x 24
=Rs 3840
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