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09-07-2016
Mathematics

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A(r) is a function that gives the area of a circle with radius r. It can be written in equation form as A(r) = 3.14r2. What is the value of A(5)?

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olemakpadu olemakpadu

10-07-2016

A(r) = 3.14r²

A(5) = 3.14*5²

= 3.14 * 25 = 78.5

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