Homework Help: Math conversion

Posted by jakey on Friday, January 11, 2013 at 8:02pm.

If one meter is equal to 39.4 inches, how many centimeters are in one foot?
Answer 30.4 cm
How is this answer obtained?

i know there is 12 in in a foot
and 100 centimeters in a meter.
what happens next?

Math conversion - bobpursley, Friday, January 11, 2013 at 8:40pm
1ft*12in/ft*100cm/39.4in= xxx cm
Math conversion - luke, Friday, January 11, 2013 at 8:56pm
I still don't get it.
Math conversion - jakey, Friday, January 11, 2013 at 8:58pm
I know!
Math conversion - Damon, Friday, January 11, 2013 at 11:21pm
(1 m/39.4 in)(12 in / 1 ft)(100 cm/m)

= 30.46 cm / ft
Math conversion - Damon, Friday, January 11, 2013 at 11:22pm
because
(m/in)(in/ft)(cm/m) = cm/ft

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