Math Problem Statement

The volume of a cube is 512 cm3. Find its total surface area.

Solution

The volume of a cube is given by the formula:

V=s3V = s^3

where ss is the side length of the cube. Given that the volume is 512cm3512 \, \text{cm}^3, we can find ss by taking the cube root of the volume:

s=5123=8cms = \sqrt[3]{512} = 8 \, \text{cm}

Now, to find the total surface area AA of the cube, we use the formula:

A=6s2A = 6s^2

Substituting s=8cms = 8 \, \text{cm}:

A=6×(8)2=6×64=384cm2A = 6 \times (8)^2 = 6 \times 64 = 384 \, \text{cm}^2

So, the total surface area of the cube is 384cm2384 \, \text{cm}^2.

Would you like further details on the steps or have any questions?

Here are 5 related questions to expand on this topic:

  1. What is the length of the diagonal of a face of the cube?
  2. How does the surface area change if the side length is doubled?
  3. What is the volume of a cube with a surface area of 150 cm²?
  4. If the volume of the cube is tripled, how does the side length change?
  5. How do you find the surface area of a rectangular prism?

Tip: The surface area of a cube grows much faster than its volume as you increase the side length, since surface area depends on s2s^2 while volume depends on s3s^3.

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Math Problem Analysis

Mathematical Concepts

Geometry
Volume
Surface Area

Formulas

Volume of a cube: V = s^3
Surface area of a cube: A = 6s^2

Theorems

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Suitable Grade Level

Grades 6-8