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

question 213

Multiple Choice

Solve the problem.
-The area of a circle is found by the equationon A $$\mathrm { A } = \pi \mathrm { r } ^ { 2 }.$$ . If Ifthe area A of a certain circle is 49? square centimeters, find its radius r.

• A) \[\mathrm { r } = 7 \sqrt { \pi } \mathrm { cm }\]
• B) \[\mathrm { r } = \pm 7 \mathrm {~cm}\]
• C) \[\mathrm { r } = 7 \pi \mathrm { cm }\]
• D) \[\mathrm { r } = 7 \mathrm {~cm}\]

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Actions or responses of an individual that can be directly seen or measured, without inferring internal states or motivations.

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Psychologists or educators who study how people learn, including the processes involved and ways to improve learning and teaching methods.

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Refers to Erik Erikson, a developmental psychologist and psychoanalyst known for his theory on the psychological development of human beings across eight stages of life.

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Sigmund Freud, an Austrian neurologist and the founder of psychoanalysis, a discipline concerned with the study of the unconscious mind.