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The function f(r) gives the area of a circle with radius r it can be written in equation form f(r)=3.14r^2 What Is f(3)

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f(3), replace r with 3
f(3)=3.14(3)^2=3.14(9)=28.26
f(3)=28.26
User Moyote
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5 votes

Answer:
f(3)=28.26

Explanation:

Given: The function
f(r) gives the area of a circle with radius 'r' it can be written in equation form
f(r)=3.14r^2

To find f(3), we need to substitute r=3 in the given function of area we get,


f(3)=3.14(3)^2\\\Rightarrow\ f(3)=3.14*9\\\Rightarrow\ f(3)=28.26

Hence,
f(3)=28.26

User Saidy
by
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