Solve the Problem $9 \mathrm {~m}$ Deep And $12 \mathrm {~m}$ Wide, How Far Is the Focus from the Vertex?
A)

question 65

Multiple Choice

Solve the problem.
-
A radio telescope has a parabolic surface. If it is $9 \mathrm {~m}$ deep and $12 \mathrm {~m}$ wide, how far is the focus from the vertex?

• A) \(4 \mathrm {~m}\)
• B) \(3 \mathrm {~m}\)
• C) \(1 \mathrm {~m}\)
• D) \(9 \mathrm {~m}\)

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Definitions:

High-Income Nations

Countries with a high gross national income per capita, offering their citizens a relatively high standard of living and economic stability.

Natural Resources

Materials or substances occurring in nature which can be exploited for economic gain, such as minerals, forests, water, and fertile land.

Lower-Income Countries

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Absolute Poverty

The amount of money needed in a particular country to meet basic needs of food, shelter, and clothing.