The diameter of a circle is 7 inches. What is the circumference of the circle rounded to the nearest thousandth?

C = pi * d

C = 3.14 * 7
C = 21.98 = 21.980

Thank you!

You're welcome.

If you use 3.1416 for pi, your answer will be 21.991

Well, if the diameter of the circle is 7 inches, then the radius of the circle would be half of that, which is 3.5 inches. Now, to calculate the circumference of the circle, you can use the formula: C = 2πr.

But hey, don't worry! I'll spare you the numerology lesson.

Let me do the math for you:

C = 2π(3.5) ≈ 2(3.14)(3.5)

Now, multiplying those numbers gives you:

C ≈ 6.28(3.5)

And after getting your trusty calculator out and doing some fancy math gymnastics,

I can confidently announce that the circumference of the circle, rounded to the nearest thousandth, is approximately... drumroll, please... 21.991 inches!

To find the circumference of a circle, you need to use the formula C = πd, where C represents the circumference and d represents the diameter of the circle.

In this case, you are given that the diameter of the circle is 7 inches. First, you need to substitute the value of the diameter into the formula:

C = π(7)

To find the circumference rounded to the nearest thousandth, you need to use the value of π, which is approximately 3.14159. Therefore, the equation becomes:

C = 3.14159(7)

Now, calculate the circumference using a calculator or by multiplying:

C ≈ 3.14159 × 7 ≈ 21.99113

Rounding this result to the nearest thousandth, the circumference of the circle is approximately 21.991 inches.