Questions: Use the given equivalents, along with dimensional analysis, to convert the given unit to the unit indicated.
16 oz = 1 lb
2000 lb = 1 T
1 oz ≈ 28 g
1 lb ≈ 0.45 kg
1 T ≈ 0.9 t
400 lb= 888.89 kg (Round to the nearest hundredth as needed.)
Transcript text: Use the given equivalents, along with dimensional analysis, to convert the given unit to the unit indicated.
\[
\begin{aligned}
16 \mathrm{oz} & =1 \mathrm{lb} \\
2000 \mathrm{lb} & =1 \mathrm{~T} \\
1 \mathrm{oz} & \approx 28 \mathrm{~g} \\
1 \mathrm{lb} & \approx 0.45 \mathrm{~kg} \\
1 \mathrm{~T} & \approx 0.9 \mathrm{t}
\end{aligned}
\]
$400 \mathrm{lb}=$ $\square$ 888.89 kg (Round to the nearest hundredth as needed.)
Solution
Solution Steps
To convert 400 pounds (lb) to kilograms (kg), we can use the given conversion factor that 1 pound is approximately 0.45 kilograms. By multiplying the number of pounds by this conversion factor, we can find the equivalent weight in kilograms.
Step 1: Identify the Conversion Factor
To convert from pounds to kilograms, we use the given conversion factor:
\[ 1 \, \text{lb} \approx 0.45 \, \text{kg} \]
Step 2: Apply the Conversion
Multiply the given weight in pounds by the conversion factor to find the equivalent weight in kilograms:
\[ 400 \, \text{lb} \times 0.45 \, \frac{\text{kg}}{\text{lb}} = 180 \, \text{kg} \]
Step 3: Round the Result
The result is already a whole number, so no further rounding is necessary.
Final Answer
The weight of 400 pounds is equivalent to \(\boxed{180 \, \text{kg}}\).