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4. The walls and the ceiling of a
room are to be plastered. The
length, breadth and height of the
room are 4m, 3m and 350 cm
respectively. Find the cost of
plastering at the rate of Rs 8.50
per m2​

Respuesta :

Step-by-step explanation:

You need to find the area of the room's walls.

Remember that area of a rectangle is [tex]A = length * breadth[/tex]

Find the area of all FIVE areas to be plastered. Four walls and one ceiling.

There is one GOTCHA in here! The heigth is given in cm. You'll need to convert this to meters.

With the area, you can multiply by the cost given.

[tex]Cost = 8.5 * \text{Area of all the walls and ceiling}[/tex]

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