Respuesta :
The value of [tex]f(4)[/tex] is 50.24
Explanation
The area of a circle with radius [tex]r[/tex] is given as: [tex]f(r)=3.14r^2[/tex]
Now, [tex]f(4)[/tex] means the value of [tex]f(r)[/tex] when [tex]r=4[/tex]. So, we will just plug [tex]r=4[/tex] into both sides of the above function.
[tex]f(4)= 3.14(4)^2\\ \\ f(4)= 3.14\times 16 =50.24[/tex]
Thus, the value of [tex]f(4)[/tex] is 50.24
Answer:
[tex]f(4)=50.24[/tex]
Step-by-step explanation:
We are given the function representing the area of a circle as,
[tex]f(r)=3.14r^2[/tex], where 'r' is the radius of the circle.
It is required to find f(4).
So, we have,
[tex]f(r)=3.14r^2[/tex]
implies [tex]f(4)=3.14\times 4^2[/tex]
implies [tex]f(4)=3.14\times 16[/tex]
implies [tex]f(4)=50.24[/tex]
Thus, the value of f(4) is 50.24.
