Question

a godown is 50m Long, 40m broad and 10m High. find the cost of whitewashing its four Walls and cieling at rs20per Square metre

Answer 1

Answer:

Step-by-step explanation:

Sol:

Length (l), breadth (b) and height (h) of the room are 12 m, 6 m and 3 m respectively.

Area of four walls of the room = 2h(l + b) = 2 × 3 × (12 + 6) = 108 m2

Area of the ceiling = l x b = 12 × 6 = 72 m2

Total area for white washing = 108 + 72 = 180 m2

Cost of washing per metre = Rs 7

Total cost = 180 × 7 = 1260

Therefore, cost of white washing four walls and the ceiling of the room is Rs 1260.

Answer 2

$\huge \purple {AnsWer}$

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.