noahborrelli noahborrelli
  • 27-06-2016
  • 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(3)?

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texaschic101
texaschic101 texaschic101
  • 27-06-2016
sub in 3 for r
A(3) = 3.14 * 3^2
A(3) = 3.14 * 9
A(3) = 28.26
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