6. A student measured a book\'s cover and recorded the length as 28.1 cm and cm.

Question

6. A student measured a book's cover and recorded the length as 28.1 cm and cm. The area using a calculator, was reported to be 637.87 cm2. reported? Explain your answer. the width as 22.7 What should the student have 7. A man weighed 152 pounds. Express the quantity in kilograms. Show your work. 8. Pike's Peak in Colorado is the 32nd highest peak in the world at 14,110 ft in height. Express this height in meters (m) and kilometers (km). Show your work. 9. A 3.456 g sample of iron filings was added to a beaker weighing 83.65 g. What is the combined weight of the beaker and sample in grams (g) and milligrams (mg). Show your work.

Explanation / Answer

6.

Area = Length X width

= 28.1 X 22.7

= 637.87 cm2

= 637.9 cm2

7.

1 pound = 0.453 kg

152 pounds = 0.453 X 150 = 68.03 kg

8.

1 ft = 0.3048 m

1 m = 0.001 km

14110 ft = 14110 X 0.3048 = 4300.728 m = 4.3 km

9.

1 g = 1000 mg

Total weight = 3.456 + 83.65 = 87.106 g = 8710.6 mg

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