Density is calculated using the formula:
\[ \text{Density} = \frac{\text{Mass}}{\text{Volume}} \]
Given:
- Mass = 454 grams
- Volume = 2270 cm³
Now, substitute the values into the formula:
\[ \text{Density} = \frac{454 \text{ g}}{2270 \text{ cm}^3} \]
Calculating the above:
\[ \text{Density} \approx 0.19956 \text{ g/cm}^3 \]
Rounding to an appropriate number of significant figures, the density of the bread is approximately:
\[ \text{Density} \approx 0.200 \text{ g/cm}^3 \]