Answered

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The formula for finding circumference is [tex] \pi \cdot d [/tex].

Select one:
A. radius
B. area
C. diameter
D. radius x 3

Sagot :

GinnyAnswer
To find the circumference of a circle, we use the formula:

[tex]\[ \text{Circumference} = \pi \times \text{diameter} \][/tex]

Let's analyze each option provided in the multiple-choice question to identify the correct one based on the formula:

a. Radius: The radius is half the diameter of a circle. So, to use radius in the circumference formula, you would need to first double the radius to get the diameter. Thus, while the radius itself isn't directly used in the formula for circumference, you can relate it to the diameter.

b. Area: The area of a circle is given by a different formula, \( \pi \times \text{radius}^2 \). The area is not directly involved in calculating the circumference and thus isn't relevant to our circumference formula.

c. Diameter: This is the correct term used in the circumference formula. The circumference is directly calculated as \( \pi \) times the diameter.

d. Radius x 3: This option suggests multiplying the radius by 3, which is not how the circumference formula is framed. To find the circumference using the radius, you would need to double the radius to get the diameter and then multiply by \( \pi \).

Given these analyses, the correct option in the context of the formula to find the circumference of a circle is:

c. diameter
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