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OpenStudy (anonymous):
Write an expression in simplest form for the area of a circle with a radius of 4r. Use 3.14 for pi. A. 3.24r2 B. 50.24r2 C. 12.56r2 D. 12.56r
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OpenStudy (anonymous):
\( 3.14 \times 16 r^2 = 50.24 r^2\), hence \( \boxed {B} \)
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