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Calculate the perimeter and area of the given L-shaped floor plan.

Mathematics

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Answers

3 parts
i

26 m\text{26 m}

ii

34 m2\text{34 m}^2\text{}

iii

GH¢ 680.00\text{GH¢ 680.00}

Step-by-step solution

7 steps

First, let's determine the lengths of the missing sides of the floor plan.
The total top length is 8 m8 \text{ m} and the bottom segment is 5 m5 \text{ m}. So, the inner horizontal segment is 8 m−5 m=3 m8 \text{ m} - 5 \text{ m} = 3 \text{ m}.
The total left vertical length is 5 m5 \text{ m} and the right vertical length is 3 m3 \text{ m}. So, the inner vertical segment is 5 m−3 m=2 m5 \text{ m} - 3 \text{ m} = 2 \text{ m}.

Part i· 2 steps

Perimeter

  1. Identify all side lengths.

    The side lengths are 8 m8 \text{ m}, 3 m3 \text{ m}, 3 m3 \text{ m} (inner horizontal), 2 m2 \text{ m} (inner vertical), 5 m5 \text{ m}, and 5 m5 \text{ m}.

  2. Sum all the side lengths to find the perimeter.

    Perimeter=8 m+3 m+3 m+2 m+5 m+5 m\text{Perimeter} = 8 \text{ m} + 3 \text{ m} + 3 \text{ m} + 2 \text{ m} + 5 \text{ m} + 5 \text{ m} Perimeter=26 m\text{Perimeter} = 26 \text{ m}

    The perimeter of the floor is 26 m\boxed{\text{26 m}}.

Part ii

34 m2\text{34 m}^2\text{}

Area

  1. Divide the L-shaped floor into two rectangles.

    We can divide it into a top rectangle and a bottom-left rectangle.
    Rectangle 1 (top): length 8 m8 \text{ m}, width 3 m3 \text{ m}.
    Rectangle 2 (bottom-left): length 5 m5 \text{ m}, width 5 m−3 m=2 m5 \text{ m} - 3 \text{ m} = 2 \text{ m}.

  2. Calculate the area of each rectangle.

    Area1=8 m×3 m=24 m2\text{Area}_1 = 8 \text{ m} \times 3 \text{ m} = 24 \text{ m}^2 Area2=5 m×2 m=10 m2\text{Area}_2 = 5 \text{ m} \times 2 \text{ m} = 10 \text{ m}^2
  3. Add the areas of the two rectangles to find the total area.

    Total Area=Area1+Area2=24 m2+10 m2=34 m2\text{Total Area} = \text{Area}_1 + \text{Area}_2 = 24 \text{ m}^2 + 10 \text{ m}^2 = 34 \text{ m}^2

    The area of the floor is 34 m2\boxed{\text{34 m}^2\text{}}.

Part iii

GH¢ 680.00\text{GH¢ 680.00}

Cost of carpeting the floor

  1. Use the total area and the cost per square metre.

    The total area is 34 m234 \text{ m}^2 and the carpet cost is GH¢ 20.00 per square metre.

  2. Calculate the total cost.

    Total Cost=Total Area×Cost per square metre\text{Total Cost} = \text{Total Area} \times \text{Cost per square metre} Total Cost=34 m2×GH¢ 20.00/m2\text{Total Cost} = 34 \text{ m}^2 \times \text{GH¢ } 20.00/\text{m}^2 Total Cost=GH¢ 680.00\text{Total Cost} = \text{GH¢ } 680.00

    The cost of carpeting the floor is GH¢ 680.00\boxed{\text{GH¢ 680.00}}.

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