a room 15m x 12m X 3m (L,B,H).four walls are to @rs10 per sq meter .roofs to white washed @rs 5 per sq Metre and floor is to fixed with granite @rs 70 per sq Metre .find the total cost
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L S A = 2h(l+b)
=2*3(15+12)
=6*27 =162
cost =162*10=1620
Area of wall =L*B
=15*12=180
cost =180*5
=900
Area of floor =180
cost =180*70=12600
Total cost= 1620+900+12600=13662
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Answer:
the total cost is 13,662
Step-by-step explanation:
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