Final answer:
To convert 8.7 kg to pounds and ounces, first calculate the weight in pounds (8.7 kg × 2.20462 lbs/kg ≈ 19.18 lbs) and then convert the decimal pounds to ounces (0.18 lbs × 16 oz/lb = 2.88 oz), resulting in approximately 19 pounds and 3 ounces for the child's weight.
Step-by-step explanation:
To convert the child's weight from kilograms to pounds and ounces, we need to utilize the conversion factor where 1 kilogram equals approximately 2.20462 pounds. Since the child weighs 8.7 kilograms, we calculate the weight in pounds as follows:
8.7 kg × 2.20462 lbs/kg ≈ 19.18 lbs
Since 1 pound is equal to 16 ounces, we need to convert the decimal part of the pounds into ounces.
0.18 lbs × 16 oz/lb = 2.88 oz
Therefore, the child weighs approximately 19 pounds and 3 ounces (since we should round to the nearest ounce).