1. Convert 0.725 km into feet, using the fact that one km equals 0.621 mile and

Question

1. Convert 0.725 km into feet, using the fact that one km equals 0.621 mile and one mile equals 5280 feet. (Enter your answer to three significant figures.)

2. Convert 0.725 g into grains, using the fact that one ounce equals 28.35 g and one ounce equals 437.5 grains. (Enter your answer to three significant figures.)

3. Convert 7. 2 X 10 to the 7th power kg into tons, using the fact that there are 2.205 pounds in one kilogram and 2000 pounds in a ton. (Enter your answer to two significant figures.)

Explanation / Answer

1]

1 KM = 0.621 mile

0.725 KM = 0.45 mile

1 mile = 5280 feet

0.45 mile = 2377.188 feet

2]

1 ounce = 28.35 gms

0.725 gms = 1*0.725 / 28.35 = 0.0255 ounces

1 ounce = 437.5 grains

0.0255 ounces = 11.188 grains

3]

1 kg = 2.205 pounds

7.2*10^7 Kg = 158760000 pounds

1 ton = 2000 pounds

158760000 pounds = 79380 tons

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