Question

What is the circumference of a circle with a diameter equaling 7 centimeters in length? Use 3.14 for π.

21.98 cm

31.4 cm

10.99 cm

43.96 cm

Answer 1

The formula for the circumference of a circle is \[2\pi*r\]
where r is the radius and pi is Pi, approximately 3.14.

C = Circumference = 2Pi ( radius )

Substitute the given radius and evaluate the circumference for this particular math problem.

Answer 2

ok

Answer 3

then wat?

Answer 4

@marrero, I mentioned earlier that the proper spelling is "what?" (NOT "wat?").

I've already explained to you what to do next: take the given value for the radius and substitute it into the equation for the circumference where you see the word "radius." Please try this. Type out what you have done.

Answer 5

C = Circumference = 2Pi ( radius )
and the radius is given: It is 7 cm.

Substituting 7 cm for "radius,"

C=Circumference = 2*Pi(7 cm.)

Please simplify this result (multiply 2 and 7 together), including the units of measurement.