Find the circumference of the given circle with a diameter of 40 cm.

Question

Use the formula: C=πd and ​3.14 for π .

The image shows a circle witha dot in the middle and a line going through that line and it says 40cm
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Type in your final answer (number only) in the box below.

Leave your answer as a decimal (do not round).

(1 point)
C =
cm
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Answer 1

To find the circumference (C) of a circle using the formula \( C = \pi d \), where \( d \) is the diameter, we can plug in the values provided:

Given:

• Diameter \( d = 40 \) cm
• \( \pi \) is approximated as 3.14

Now, substituting the values into the formula:

\[ C = \pi d = 3.14 \times 40 \]

Calculating this:

\[ C = 3.14 \times 40 = 125.6 \]

So, the circumference of the circle is:

125.6 cm