1 a marathon race covers a distance of 42195 km what is, Ask an Expert

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1. A marathon race covers a distance of 42.195 km. What is this distance in meters? In miles?

2. A standard U.S. postage stamp is 2.5 cm long and 2.1 cm wide. What is the area of the stamp in square centimeters? In square meters?

3. A compact disc has a diameter of 11.8 cm. What is the surface area of the disc in square centimeters? In square meters? [Area of a circle = (π)(radius)2]

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Category:- Chemistry
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