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.