a hall is 12m long , 10m wide and 5m high. its wall and the roof are to be white washed from inside . find the total area to be whitewashed . also find its cost at the rate of rupees 5.40 per square metre
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Answered by
2
Answer:
64mm..,.....................
Answered by
8
Answer:
340 m^2, Rs. 1836
Step-by-step explanation:
Total area to be washed = Area of four walls + Area of ceiling
= 2(l + b)h + lb = 2(12 + 10)5 + 12*10
= 220 + 120 = 340 m^2
Cost at Rs. 5.40 / m^2 = 340 * 5.4 = 34 * 54 = Rs. 1836
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