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(4)?
a. 50.24
b. 25.12
c. 19.14
d. 157.75

Option 'A' is correct.

Step-by-step explanation:

Since we have given that

the function f(r) givens the area of a circle with radius r.

i.e.

Put the value of r = 4 as we have to find the value of f(4) .

Hence, Option 'A' is correct.

hello :

by applying the distributive property :

6 × 4.3 = 6 × ( 4 + 0.3 )

            =   (6 ×   4) + (6 ×   0.3)

            = 24 + 1.8

6 × 4.3 = 25.8

she will travel a distance in the range of 3 - 11 miles