Math, asked by monudhaka123456789, 10 months ago

plz give a proper well maintained answer​

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Answers

Answered by Siddharta7
1

Step-by-step explanation:

Given:

Length = 5 m, Breadth = 4 m, and Height = 3 m

Area of four walls of the room = 2h(l + b)

                                                   = 2 * 3(5 + 4)

                                                   = 54 m²

Area of the ceiling = l * b

                               = 5 * 4

                               = 20 cm²

Total area of the four walls and the ceiling of the room :

= 54 + 20

= 74 cm²

Also Given,

Cost of white washing = 7.50 per m²

Then,

Total cost of white washing = 74 * 7.50 = 555

Therefore,

Cost of white washing its four walls = 555

Hope it helps!

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