A Thick-Walled Metal Pipe of Length 20

question 57

Multiple Choice

A thick-walled metal pipe of length 20.0 cm has an inside diameter of 2.00 cm and an outside diameter of 2.40 cm.What is the total surface area of the pipe,counting the ends,in square centimeters?

• A)276 cm²
• B)277 cm²
• C)278 cm²
• D)279 cm²

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Definitions:

Empathy-Altruism Model

A psychological theory suggesting that feeling empathy for others can lead to altruistic behavior, where help is offered with no expectation of personal gain.

Social Exchange

A theoretical framework suggesting that social interactions are based on the exchange of resources, with the aim of maximizing benefits and minimizing costs.

Empathy-Altruism Model

A theory suggesting that feelings of empathy for another person produce an altruistic motivation to help.

Negative State Relief Hypothesis

A theory suggesting that individuals help others in order to alleviate their own negative moods and feelings.