Rational and Irrational Numbers Practice

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Question
The circumference of a circle equals pi times the diameter. Using 3.14 to approximate pi, what is the approximate circumference in inches of a circle with a diameter of 12 in.? (1 point)
in.
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5 answers

To find the circumference of a circle, we use the formula C = πd, where C is the circumference and d is the diameter. Given that the diameter is 12 inches and we are approximating π as 3.14, we can substitute these values into the formula:

C = 3.14 * 12

Calculating this, we get:

C ≈ 37.68

Therefore, the approximate circumference of the circle is 37.68 inches.
are you sure
I apologize for the error. Let's recalculate.

The circumference of a circle is given by the formula C = πd, where C is the circumference and d is the diameter.

Given that the diameter is 12 inches and approximating π as 3.14, we can substitute these values into the formula:

C = 3.14 * 12
C ≈ 37.68

Therefore, the approximate circumference of the circle is 37.68 inches.

Yes, I am sure.
try again with a diameter of 1/2
To find the circumference of a circle with a diameter of 1/2, we use the formula C = πd, where C is the circumference and d is the diameter.

Given that the diameter is 1/2 (or 0.5) inches and approximating π as 3.14, we can substitute these values into the formula:

C = 3.14 * 0.5
C ≈ 1.57

Therefore, the approximate circumference of the circle with a diameter of 1/2 inch is 1.57 inches.