Math Problem Statement

You melt 1 kg of gold into an even-sided cube. What will be the side length of the cube when the density of gold is 19.3 grams/cm?

The answer requires 2 decimal places, so round up!

Solution

To find the side length of the cube formed by 1 kg of gold, we will use the formula for the volume of a cube and the fact that:

Density=MassVolume\text{Density} = \frac{\text{Mass}}{\text{Volume}}

Given:

  • Mass of gold: 1 kg = 1000 grams
  • Density of gold: 19.3 g/cm³
  • Volume of a cube: V=s3V = s^3 where ss is the side length.

Steps:

  1. Use the formula for density: Volume=MassDensity=1000g19.3g/cm3\text{Volume} = \frac{\text{Mass}}{\text{Density}} = \frac{1000 \, \text{g}}{19.3 \, \text{g/cm}^3} Calculating this: Volume51.81cm3\text{Volume} \approx 51.81 \, \text{cm}^3

  2. Since V=s3V = s^3, solve for ss: [ s = \sqrt[3]{\text{Volume}} = \sqrt[3]{51.81} ]

    Calculating the cube root: s3.73cms \approx 3.73 \, \text{cm}

So, the side length of the cube is approximately 3.73 cm.

Would you like more details or have any questions?

Related questions:

  1. What would the side length be if the mass of gold was 2 kg?
  2. How does changing the density affect the side length of the cube?
  3. What is the volume of a cube with a side length of 4 cm?
  4. If the gold is reshaped into a sphere, what would be the radius?
  5. How does the volume formula change for different shapes like spheres or cylinders?

Tip: Cube roots can be calculated using scientific calculators or cube root functions in most software packages like Excel or Python.

Ask a new question for Free

By Image

Drop file here or Click Here to upload

Math Problem Analysis

Mathematical Concepts

Geometry
Algebra
Volume of Solids
Density

Formulas

Density = Mass / Volume
Volume of a Cube: V = s^3
Cube Root: s = ∛Volume

Theorems

Volume Calculation
Cube Root Theorem

Suitable Grade Level

Grades 9-12