## Introductory Chemistry (5th Edition)

a) $57.15 cm$ b) $38.4048 m$ c) $0.75438 km$ d) $60.96 mm$
a) To convert in to cm, multiply by 2.54 because 1 in= 2.54 cm. $22.5 in\times\frac{2.54 cm}{1 in } = 57.15 cm$ b) To convert from ft to m, divide by 3.281 because 1 m= 3.281 ft. $126 ft\times\frac{1 m }{3.281 ft} = 38.4048 m$ c) To convert from yards to km, divide by 1093.61 because 1 km= 1093.61 yards. $825 yards\times\frac{1 km }{1093.61 yards} = 0.75438 km$ d) To convert in to cm, multiply by 25.4 because 1 in= 25.4 mm. $2.4 in\times\frac{25.4 mm}{1 in } = 60.96 mm$