StraighterLine Physics Practice Test 2025 - Free Physics Practice Questions and Study Guide

Question: 1 / 400

How many meters are in 4.00 feet using the conversion factor 1 in. = 2.540 cm?

0.81 m

1.00 m

1.22 m

To convert feet to meters using the conversion factor provided, it's essential to first convert feet to inches, and then inches to centimeters, and finally convert centimeters to meters.

Start by recognizing that there are 12 inches in a foot. Therefore, to convert 4.00 feet to inches, you multiply by 12:

4.00 feet x 12 inches/foot = 48.00 inches

Next, use the conversion factor of 2.540 cm per inch to convert inches to centimeters:

48.00 inches x 2.540 cm/inch = 121.92 cm

Finally, convert centimeters to meters knowing that 1 meter is equal to 100 centimeters:

121.92 cm x (1 meter/100 cm) = 1.2192 meters

When rounded to three significant figures, this value is approximately 1.22 meters. Therefore, the option that rounds this correctly is the one that states 1.22 meters, confirming it as the correct answer.

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1.50 m

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