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)? 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)?

I have a solution here wherein instead of A(3) it is A(4):

Plugging the numbers into the equation we get 4x4x3.14 which is 50.24

I hope you could use my method for solving the A(4) in solving the A(3)

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