Question

A 6.0 ft person weighs 168 lb. Express this person's height in meters and weight in kilograms. (1 lb = 453.6 g; 1 m = 3.28 ft.)

Answer 1

Relationship between meters and is as follows.

Write the conversion factors for the relation.

or

Relationship between grams and’s as follows.

Write the conversion factors for the relation.

6.0-ft height person weighs 168 lb. Now, convert the height and weight into meters and kilograms respectively. For that multiply the height of the person with suitable conversion factor to convert his height from ft to meters.

Therefore, height of the person in is.

To convert weight from to kilograms, first convert it into grams. For that multiply mass of person with suitable conversion factor.

But we know that

Conversion factors are

Now, multiply mass of person in grams with suitable conversion factor to get the mass in kilograms.

Therefore, mass of the person in kilograms is.