Question

Pls solve it.........​

Answer 1

Rs 8640.

Explanation:

Let the height of the room be x m.

Then, the breadth of the room = 2x m and the length of the room = 2×2x = 4x m.

The volume of the room is given by:

Volume = (Length × Breadth × Height)

Substituting the values, we get:

512 = (4x × 2x × x)

512 = 8x³

`\sf x^3 =(512)/(8)`

`\sf x^3 = 64`

`\sf x =\sqrt[3]{64}`

x = 4

Therefore, the height = 4 m, breadth = 8 m and length = 16 m.

The total area of the walls to be plastered is given by:

Area = Area of 4 wall + Area of ceiling+ Area of floor

Area = 2 × Height( Length+ Breath)

Area = 2 × 4 (8 + 16) +

Area = 8 × 24

Area = 192 m²

The cost of plastering the walls is given by:

Cost = (Area × Rate per square m)

Cost = 192 × 45

Cost = Rs 8640

Therefore, the cost of plastering the walls of the room is Rs 8640.