What is the circumference of a circle when the diameter is 3

9.42 units (3 s.f.)

Step-by-step explanation:

Circumference of circle= 2πr

Radius

= diameter ÷2

= 3 ÷2

= 1.5

Circumference of circle

= 2(π)(1.5)

= 3π

= 9.42 units (3 s.f.)

C=3π OR around 9.42478...

Step-by-step explanation:

If the diameter is 3, then the radius is 1.5

C=2πr

C=2π(1.5)

C=3π      [You can also see that you could find the circumference by multiplying the diameter to pi because 2r is diameter.]

C= roughly 9.42478...

option a.

step-by-step explanation:

if you look closely at the graph, we can notice that the function is not defined at two different points.

if you look at functions b and c, you will notice that both functions are not defined at just one point. the function b is not defined at x= -5/2 and function c is not defined at x=-5. both options are discarded, given that our function should not be defined at two fiferent points.

now, if you look closely at the graph you will notice that the function sketched is not defined at x=5 and x=-2.