Question
A baby weighs 7 lb 4 oz at birth. Calculate the baby's weight in kg : \( \square \) kg Round to two decimal places
Ask by Ford Barker. in Canada
Mar 10,2025
Upstudy AI Solution
Tutor-Verified Answer
Answer
The baby weighs approximately 3.29 kg.
Solution
1. Convert the ounces to pounds. Since there are 16 oz in 1 lb, we have:
\[
4\,\text{oz} = \frac{4}{16} = 0.25\,\text{lb}
\]
2. Add this to the pounds:
\[
7\,\text{lb} + 0.25\,\text{lb} = 7.25\,\text{lb}
\]
3. Convert pounds to kilograms using the conversion factor \(1\,\text{lb} = 0.45359237\,\text{kg}\):
\[
7.25\,\text{lb} \times 0.45359237\,\text{kg/lb} \approx 3.29\,\text{kg}
\]
Thus, the baby's weight is \(3.29\) kg.
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Simplify this solution Mind Expander
To convert the baby’s weight from pounds and ounces to kilograms, first convert the total weight to pounds. There are 16 ounces in a pound, so: 7 lb 4 oz = 7 lb + (4 oz / 16 oz/lb) = 7 + 0.25 = 7.25 lb. Now, to convert pounds to kilograms, use the conversion factor where 1 pound is approximately 0.453592 kg: 7.25 lb × 0.453592 kg/lb ≈ 3.287 kg. Rounded to two decimal places, the baby's weight is approximately **3.29 kg**.
