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1. A rectangle of length 24cm and width 18cm has 4 identical squares of side 6cm placed on each side. Calculate the area of the figure.

2. Calculate the area of the figure that is made of a number of squares of side 5cm.

3. A rectangle has dimensions of 30cm by 24cm. A piece 8cm by 6cm is cut off from one edge. Calculate the area of the rectangle.

4. Square ABCD is divided into rectangles ABEF and CDEF, which is divided into 4 equal squares. Calculate:
(a) the length of a side of one of the smaller squares.
(b) the area of square ABCD.
(c) the area of rectangle CDEF.

5. Figures A and B have the same area. If the length of a side of the square is 10m, calculate the length of side M of the rectangle.

Answer :

Let's take a look at the problems one by one:

  1. Calculate the area of the figure with squares on each side of the rectangle.

    • Given a rectangle with length 24 cm and width 18 cm. Four identical squares of side 6 cm are placed on each side.

    • First, calculate the area of the rectangle:

      [tex]\text{Area of the rectangle} = \text{Length} \times \text{Width} = 24\, \text{cm} \times 18\, \text{cm} = 432\, \text{cm}^2[/tex]

    • Calculate the area of one square:

      [tex]\text{Area of one square} = \text{Side} \times \text{Side} = 6\, \text{cm} \times 6\, \text{cm} = 36\, \text{cm}^2[/tex]

    • Since there are 4 squares, calculate their total area:

      [tex]\text{Total area of squares} = 4 \times 36\, \text{cm}^2 = 144\, \text{cm}^2[/tex]

    • The total area of the figure is the sum of the area of the rectangle and the total area of the squares:

      [tex]432\, \text{cm}^2 + 144\, \text{cm}^2 = 576\, \text{cm}^2[/tex]

  2. Calculate the area of the figure that is made of squares of side 5 cm.

    • Without specific details on the number of squares or configuration, the area of one square is:

      [tex]\text{Area of one square} = 5\, \text{cm} \times 5\, \text{cm} = 25\, \text{cm}^2[/tex]

    • If more details were provided about the configuration or number of squares, we could calculate the total area.

  3. Calculate the area of a rectangle after a piece is cut off.

    • The original rectangle has dimensions 30 cm by 24 cm.

    • Calculate the original area:

      [tex]\text{Original area} = 30\, \text{cm} \times 24\, \text{cm} = 720\, \text{cm}^2[/tex]

    • A piece 8 cm by 6 cm is cut off. Calculate the area of the piece:

      [tex]\text{Area of the piece} = 8\, \text{cm} \times 6\, \text{cm} = 48\, \text{cm}^2[/tex]

    • The area of the rectangle after the piece is cut off:

      [tex]720\, \text{cm}^2 - 48\, \text{cm}^2 = 672\, \text{cm}^2[/tex]

  4. Calculate parts related to square ABCD and rectangles inside it.

    • Without specific dimensions, but given: Square ABCD is divided into rectangles ABEF and CDEF, which is further divided into 4 equal squares.
    • (a) and (b) require dimensions, but if each small square is equal, and if needed dimensions/details are given, apply area and side calculations.
  5. Calculate side M of a rectangle given figures A and B have the same area.

    • If figures A and B are assumed to be square and a rectangle, given the side of the square is 10 m:

      [tex]\text{Area of the square} = 10\, \text{m} \times 10\, \text{m} = 100\, \text{m}^2[/tex]

    • Rectangle has the same area:

      [tex]\text{Area of rectangle} = \text{Length} \, (M) \times \text{Width} = 100\, \text{m}^2[/tex]

    • Without a fixed width, we can only express M in terms of width using [tex]M = \frac{100}{\text{Width}}[/tex]. If the width is known, M can be calculated.

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