Convert these units into metric units?

Question

A newborn is 21 inches in length and weighs 6lb 9oz

describe the baby in metric units.

explain to me how you do this exactly having some problems

Answer 1

There are 2.54 cm in an inch.  So multiply 21 times 2.54 to get the centimeters.

An ounce is 28.35 grams.  There are 16 ounces in a pound, so 6lb 9oz is 105 ounces. Multiply that by 28.35 to get the grams.  Since this will be a big number, divide by 1000, (move the decimal point 3 places to the left) to get the kilograms.