Find the circumference

20.22 is the circumference of the circle

Step-by-step explanation:

Given:
Diameter = 6.45
Radius = 6.45/2 =3.22

To find Circumference:
Circumference = 2r

                          = 2* 3.14 * 3.22

                            = 6.28*3.22
                              =20.22

this linear equation would have just one solution.

step-by-step explanation:

the reason why this would have one solution is that it is an expression with just one variable. since that variable is not raised to a power, it will always have just one solution.