Math
posted by Jakey .
The diameter of a lead pipe is measured to be 2.40 cm and you are asked to convert to units of inches. Which of the following conversion factors can you use to solve this problem?
12 in = 1 ft
100 cm = 1 m
3 ft = 1 yd
Two of the these
?>None of these

1 in = 2.54 cm
1 cm = 1 in / 2.54
d ( in ) = 2.4 / 2.54
None of these