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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)

Respuesta :

apologiabiology
f(3), replace r with 3
f(3)=3.14(3)^2=3.14(9)=28.26
f(3)=28.26
JeanaShupp

Answer: [tex]f(3)=28.26[/tex]

Step-by-step explanation:

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

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

[tex]f(3)=3.14(3)^2\\\Rightarrow\ f(3)=3.14\times9\\\Rightarrow\ f(3)=28.26[/tex]

Hence, [tex]f(3)=28.26[/tex]

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