Not sure how to do this
the function f(r) gives the area of a circle with radius r. it can be written in equation form as f(r) = 3.14r2. what is f(3

 The correct option is (B) 28.26.

Step-by-step explanation:  Given that the function f(r) gives the area of a circle with radius r. It can be written in equation form as follows :

We are to find the value of f(3).

To find f(3), we must substitute r = 3 in the definition of f(r).

Putting r = 3 in the expression for f(r), we get

Thus, the value of f(3) is 28.26.

Option (B) is CORRECT.

y=x+2 hope this jdjxhdnzbdjdo

answer: f true

step-by-step explanation: