it costs Rs 6300 to paint the four walls of a room at the rate of Rs 35 per square metre.if the room is 10 cm long and 8m wide,what is its height.
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L. S. A of wall =6300/35=180metre square
L. S. A of wall = 2h(l+b)=180
2h(18)=180
36h=180
h=180/36
H=5
L. S. A of wall = 2h(l+b)=180
2h(18)=180
36h=180
h=180/36
H=5
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