1.

Find the cost of painting the walls of a rooms if the room is 4m 50cm high and each side of the room is 6m long.The cost of painting is Rs 10per sq m​

Answer»

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Find the cost of painting the walls of a room if the room is 4 m 50 cm high and each SIDE of the room is 6 m long the cost of painting is Rs 10 per sq m.

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⇒The cost of painting the wall of the room is ₹ 1080.

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Explanation:

It is stated that,

Each room is 4 m 50 cm high

= 4 +(50/100) m

[1 m= 100 cm]

 = 4.0 +0.5 m

 = 4.5 m

Each room is 6 m long

Hence for each wall of the room _

Length = 6 m

Breadth = 4.5 m

∴ AREA of each wall = (Length × Breadth)

                                = (6× 4.5) m²

                                = 27.0 m²

                                = 27 m²

We know that, a room consists of 4 walls.

Total area of the walls of the room = (27×4) m²

 = 108 m².

The cost of painting 1 m² is ₹ 10

Hence, the cost of painting 108 m²

= ₹ (108×10)

= ₹1080

\sf\small{∴ The \: cost \: of \: painting \: the \: wall \: of \: the \: room \: is \: ₹ 1080.}

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