Mana has a string that is 2 1/4 feet long. He needs to cut it into equal sections measuring 1/8 foot each. How many equal pieces
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We use the formula where d is distance, s is speed and t is time.
Therefore, a car would tracel 480 km.
The formula for circumference is 
or 
. We have a diameter for the semicircle, so let's use the diameter formula. 
which is either 
or C = 5.338 if we multiply pi in as 3.14. BUT this is only half a circle, so we only have half that distance around the outside. Therefore, the circumference of half this circle is 2.669 cm. But we need to add the 24 mm in. 24 mm in centimeters is 2.4 cm. So 2.669 + 2.4 = 5.069