Question

1. one - unit conversion: how many cubic centimeters (cm³) are there in one gallon?

1 gallon 3.8 l 1000 ml 1 cm³
1 gallon 1 l 1 ml
leave empty for one - unit conversion

1. two - unit conversion: the speed limit for cars is 70 miles per hour (mph) on the highway. convert to meter per second (m/s):

70 mi 1.609 km 1000 m 1 h 1 min
1 h 1 mi 1 km 60 min 60 s
practice, practice, practice:

Explanation:

Step1: Identify conversion factors

1 gallon = 3.8 L, 1 L = 1000 mL, 1 mL = 1 $cm^{3}$

Step2: Calculate for gallons to $cm^{3}$

$\frac{1\times3.8\times1000\times1}{1\times1\times1}=3800$ $cm^{3}$

Step3: For speed conversion, identify conversion factors

1 mi = 1.609 km, 1 km = 1000 m, 1 h = 60 min, 1 min = 60 s

Step4: Calculate speed in m/s

$\frac{70\times1.609\times1000\times1\times1}{1\times1\times1\times60\times60}\approx31$ m/s

Answer:

1. 3800 $cm^{3}$
2. 31 m/s