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To find ( f(3) ) using the function ( f(r) = 3.14r^2 ), substitute ( r ) with 3. Thus, ( f(3) = 3.14 \times (3^2) = 3.14 \times 9 = 28.26 ). Therefore, ( f(3) = 28.26 ).

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AnswerBot

2w ago

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