Solve the Problem $A = \pi r ^ { 2 }$

question 505

Multiple Choice

Solve the problem.
-The area $A = \pi r ^ { 2 }$ of a circular oil spill changes with the radius. At what rate does the area change with respect to the radius when $r = 4 \mathrm { ft }$ ?

• A) \(8 \pi \mathrm { ft } ^ { 2 } / \mathrm { ft }\)
• B) \(4 \pi \mathrm { ft } ^ { 2 } / \mathrm { ft }\)
• C) \(8 \mathrm { ft } ^ { 2 } / \mathrm { ft }\)
• D) \(16 \pi \mathrm { ft } ^ { 2 } / \mathrm { ft }\)

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Definitions:

Foreign Exchange Exposure

The risk associated with changes in foreign exchange rates affecting the value of investments held in foreign currencies.

Derivatives

Financial instruments whose value is based on the value of another asset, such as futures, options, and swaps.

Transactions Exposure

The potential risk of value change in foreign currency transactions due to fluctuating exchange rates.

Forward Contract

A forward contract is a customized financial agreement between two parties to buy or sell an asset at a specified future date for a price agreed upon today.