-A Circle Has the Area 126

question 34

Multiple Choice

-A circle has the area 126 . To the nearest tenth of a centimeter, find the length of its diameter.

• A) 6.3 cm
• B) 12.7 cm
• C) 19.0 cm
• D) None of These

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Definitions:

Ether

A class of organic compounds that contain an oxygen atom connected to two alkyl or aryl groups, used as solvents and anesthetics.

Chemical Shift

A measure of the change in resonant frequency of a nucleus in a magnetic field due to its electronic environment, important in nuclear magnetic resonance (NMR) spectroscopy.

Carbon

A nonmetallic element that forms the basis of all known life on Earth, symbolized as C.

Oxygen

A chemical element with the symbol O and atomic number 8, essential for respiration in most life forms and used widely in industry.