Question

The lenght and bredth of the room are 3 m × 4m, find it's area including roof and floor if it's height is 1.5 m​

Answer 1

Step-by-step explanation:

Let h be the height of the roomso length = 3 hBreadth = 32 hArea of walls = 2(lh + bh) Area of walls = costRate = 2161.50 = 144 m^2 So 2h (3h + 32h )

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Answer 2

Area to be white washing=2h(l+b)+lb

=2×4(5+3.5)+(5×3.5)

=68+17.5=85.5㎡

Total cost of white washing=Rs. (85.5×15)=Rs. 1282.5