A romm is three times as long as it is broad and its height is 4.6m.If the cost of carpeting its floor at Rs.240per meter square is Rs 18000,find the cost of colouring the walls at Rs 24per meter square.
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Answer:
184 rupees
Step-by-step explanation:
length. - 3b
bredth. - b
height - 4.6m
base area - length *breadth
18000/240=75
75. - 3b* b
b*b= 75/3
bredth= 5 m
by vertical sueface area,
=2h(length+bradth)
=2*4.6(15+5)
= 2*46/10*20
= 46*4
=184rupeese
thank you
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