Math Problem Statement

Calculate the density, grams/cm3, of a piece of metal. The rectangular piece of solid metal has the dimensions of 2.0cm, 3.0cm and 2.0cm. The unidentified metal has a mass of 54 grams.

Solution

To calculate the density of the metal, we will use the formula for density:

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

Step 1: Find the volume of the metal

The volume of a rectangular solid is calculated by multiplying its length, width, and height:

Volume=Length×Width×Height\text{Volume} = \text{Length} \times \text{Width} \times \text{Height}

Given:

  • Length = 2.0 cm
  • Width = 3.0 cm
  • Height = 2.0 cm

Volume=2.0cm×3.0cm×2.0cm=12.0cm3\text{Volume} = 2.0 \, \text{cm} \times 3.0 \, \text{cm} \times 2.0 \, \text{cm} = 12.0 \, \text{cm}^3

Step 2: Use the density formula

Now, using the mass of 54 grams and the volume of 12.0 cm³, we can calculate the density:

Density=54g12.0cm3=4.5g/cm3\text{Density} = \frac{54 \, \text{g}}{12.0 \, \text{cm}^3} = 4.5 \, \text{g/cm}^3

Final Answer:

The density of the metal is 4.5 g/cm³.

Would you like more details or have any questions?

Here are 5 related questions to expand your understanding:

  1. What is the importance of density in identifying materials?
  2. How would the density change if the metal were hollow?
  3. Can you convert the density to kg/m³?
  4. How is density related to buoyancy in liquids?
  5. What happens to the density of a material if its temperature increases?

Tip: Remember, density can vary slightly with temperature because volume can expand or contract depending on heat.

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Math Problem Analysis

Mathematical Concepts

Density
Volume Calculation
Ratio and Proportions

Formulas

Density = Mass / Volume
Volume = Length × Width × Height

Theorems

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Suitable Grade Level

Grades 6-8