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Room is 7 M long 7 M wide and 3.5 M height find the cost of covering it walls by a paper of 50 cm wide at the rate of 1.50per meter?
Verified Answer
Room is 7 M long 7 M wide and 3.5 M height find the cost of covering i...
Length of room = 7m

Width of room   = 7m

Height of room  = 3.5m

We know that there are 5 walls (4 walls + 1 ceiling) in room

  So, area of 5 walls = 2(l+b)h + l x b

                                = 2(7+7)3.5 + 7x7

                                = 28x3.5 +49 = 98+49 = 147m^2

Cost of covering 1m^2 of wall  with wall paper = Rs 3

∴ Cost of covering 147m^2 of wall  with wall paper = Rs 147x3 = Rs 441

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Most Upvoted Answer
Room is 7 M long 7 M wide and 3.5 M height find the cost of covering i...
Calculating the Area of the Room:

To find the cost of covering the walls of the room, we first need to calculate the total area of the walls. The area of each wall can be calculated by multiplying the length and height. Since the room has four walls, we will calculate the area of each wall separately and then add them together.

Given:
Length of the room = 7 m
Width of the room = 7 m
Height of the room = 3.5 m

Calculating the Area of the First Wall:
Length of the first wall = Length of the room = 7 m
Height of the wall = Height of the room = 3.5 m

Area of the first wall = Length × Height = 7 m × 3.5 m = 24.5 square meters

Calculating the Area of the Second Wall:
Length of the second wall = Width of the room = 7 m
Height of the wall = Height of the room = 3.5 m

Area of the second wall = Length × Height = 7 m × 3.5 m = 24.5 square meters

Calculating the Area of the Third Wall:
Length of the third wall = Length of the room = 7 m
Height of the wall = Height of the room = 3.5 m

Area of the third wall = Length × Height = 7 m × 3.5 m = 24.5 square meters

Calculating the Area of the Fourth Wall:
Length of the fourth wall = Width of the room = 7 m
Height of the wall = Height of the room = 3.5 m

Area of the fourth wall = Length × Height = 7 m × 3.5 m = 24.5 square meters

Calculating the Total Area of the Walls:
Total area of the walls = Area of the first wall + Area of the second wall + Area of the third wall + Area of the fourth wall
= 24.5 square meters + 24.5 square meters + 24.5 square meters + 24.5 square meters
= 98 square meters

Calculating the Cost of Covering the Walls:
Now that we know the total area of the walls, we can calculate the cost of covering them with a wallpaper that is 50 cm wide. To convert the width of the wallpaper to meters, we divide it by 100.

Width of the wallpaper = 50 cm = 50/100 = 0.5 m

The cost of covering 1 square meter of the walls is given as $1.50.

Therefore, the cost of covering the total wall area of 98 square meters with the wallpaper is:

Cost = Total area × Cost per square meter
= 98 square meters × $1.50 per square meter
= $147

Therefore, the cost of covering the walls of the room with the given wallpaper is $147.
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Room is 7 M long 7 M wide and 3.5 M height find the cost of covering it walls by a paper of 50 cm wide at the rate of 1.50per meter?
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Room is 7 M long 7 M wide and 3.5 M height find the cost of covering it walls by a paper of 50 cm wide at the rate of 1.50per meter? for Class 7 2024 is part of Class 7 preparation. The Question and answers have been prepared according to the Class 7 exam syllabus. Information about Room is 7 M long 7 M wide and 3.5 M height find the cost of covering it walls by a paper of 50 cm wide at the rate of 1.50per meter? covers all topics & solutions for Class 7 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Room is 7 M long 7 M wide and 3.5 M height find the cost of covering it walls by a paper of 50 cm wide at the rate of 1.50per meter?.
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