GIVEN: 108 ft

FIND: m

SOLUTION MAP

ft \underset{\frac{12  in.}{1  ft} }{\longrightarrow } in. \underset{\frac{1  m}{39.37  in.} }{\longrightarrow } m

RELATIONSHIPS USED

1 m = 39.37 in. (Table 2.3)

1 ft = 12 in. (by definition)

SOLUTION

108  \cancel{ft}\times \frac{12  \cancel{in.}}{1  \cancel{ft}} \times \frac{1  m}{39.37  \cancel{in.}}

= 32.918 m

= 32.9 m

The answer has the right units (meters), and it makes sense; because a meter is longer than a foot, the number of meters should be less than the number of feet.