Question

a godown is 50 m long 40 m board and 10 m high

Answer 1

Since whitewashing is to be done of a Godown, then the four wall and the ceiling has to white washed.

The dimensions of two walls will be Length = 50 M, Height = 10 M.

So the area of the two walls will be = 2 (L X H) = 2 ( 50 x 10) = 1000 M2.

The dimension of the other two walls = Broad = 40 M, Height = 10 M.

So the area of the other two walls = 2(B x H) = 2(40 x 10) = 800 M2.

Dimension of the ceiling = Length = 50 M, Broad = 40 M

So the area of the ceiling = L x B = 50 x 40 = 2000 M2.

So the total area to be white washed = 1000 + 800 + 2000 = 3800 M2.

Cost of white washing = Rs 20 per M2.

So the cost of white washing the complete godown = 3800 x 20 = Rs. 76000.00

Ans: Rs. 76000.00

Answer 2

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Dimension of godown

⠀L = 50m⠀⠀B = 40m ⠀H = 10m

⠀⠀Area of 4 walls = 2(L+B) × H

⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀= 2 ( 50 + 40 )

⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀ ⠀= ( 2 × 90 × 10 )m²

⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀= 1800m²

Area of celling = ( L×B )sq.unit

⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀= ( 50 × 40 ) m²

⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀= 2000m²

⠀⠀Total area = 2000 + 1800

⠀⠀⠀⠀⠀⠀= 3800m²

Total cost = Total area × Cost per m²

⠀⠀⠀⠀⠀⠀= 3800 × 20

⠀⠀⠀⠀⠀⠀= ₹ 76000

So your answer is ₹ 76000.