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A cube of sides 6 cm is divided into smaller cubes of sides 1 cm. Determine: a) The total surface area of the larger cube. b) The total surface area of one smaller cube. c) Number of cubes that will b

Mathematics

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Here's the solution for question 5.

Question 5: A cube of sides 6 cm is divided into smaller cubes of sides 1 cm. Determine:

a) The total surface area of the larger cube.

b) The total surface area of one smaller cube.

c) Number of cubes that will be made.

  1. Calculate the total surface area of the larger cube.

    The formula for the total surface area of a cube is 6×(side)26 \times (\text{side})^2.
    The side length of the larger cube is 6 cm.

    Total surface area of larger cube=6×(6 cm)2\text{Total surface area of larger cube} = 6 \times (6 \text{ cm})^2 =6×36 cm2= 6 \times 36 \text{ cm}^2 =216 cm2= 216 \text{ cm}^2

    a) The total surface area of the larger cube is 216 cm2\boxed{\text{216 cm}^2}.

  2. Calculate the total surface area of one smaller cube.

    The side length of a smaller cube is 1 cm.

    Total surface area of one smaller cube=6×(1 cm)2\text{Total surface area of one smaller cube} = 6 \times (1 \text{ cm})^2 =6×1 cm2= 6 \times 1 \text{ cm}^2 =6 cm2= 6 \text{ cm}^2

    b) The total surface area of one smaller cube is 6 cm2\boxed{\text{6 cm}^2}.

  3. Calculate the number of smaller cubes that can be made.

    First, find the volume of the larger cube.

    Volume of larger cube=(side)3=(6 cm)3=216 cm3\text{Volume of larger cube} = (\text{side})^3 = (6 \text{ cm})^3 = 216 \text{ cm}^3

    Next, find the volume of one smaller cube.

    Volume of smaller cube=(side)3=(1 cm)3=1 cm3\text{Volume of smaller cube} = (\text{side})^3 = (1 \text{ cm})^3 = 1 \text{ cm}^3

    To find the number of smaller cubes, divide the volume of the larger cube by the volume of one smaller cube.

    Number of smaller cubes=Volume of larger cubeVolume of smaller cube\text{Number of smaller cubes} = \frac{\text{Volume of larger cube}}{\text{Volume of smaller cube}} =216 cm31 cm3= \frac{216 \text{ cm}^3}{1 \text{ cm}^3} =216= 216

    c) The number of cubes that will be made is 216\boxed{\text{216}}.

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