Solve the Problem $$\pi r ^ { 2 },$$ , Where π Is an Irrational Number

question 102

Multiple Choice

Solve the problem.
-The area of a circle of radius r is given by the polynomialal $$\pi r ^ { 2 },$$ , where π is an irrational number. Use 3.14 as an approximation of $\pi ,$ and find the area of a circle with radius 7 cm.

• A) \(147 \mathrm {~cm} ^ { 2 }\)
• B) \(21.98 \mathrm {~cm} ^ { 2 }\)
• C) \(153.86 \mathrm {~cm} ^ { 2 }\)
• D) \(43.96 \mathrm {~cm} ^ { 2 }\)

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