To find the diameter of the circle when given the circumference, you can use the formula:

$C = \pi \times d$

where $C$ is the circumference and $d$ is the diameter. Rearranging the formula to solve for the diameter:

$d = \frac{C}{\pi}$

Given that the circumference $C$ is 264 cm:

$d = \frac{264 \text{ cm}}{\pi} \approx \frac{264 \text{ cm}}{3.1416} \approx 84 \text{ cm}$

So, the diameter of the circle is approximately 84 cm.

Would you like more details or have any questions?

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Here are 5 related questions to consider:

1. What would be the radius of the circle if the diameter is 84 cm?
2. How do you calculate the area of a circle if the diameter is known?
3. If the radius is halved, what happens to the circumference?
4. What is the relationship between the diameter and the area of a circle?
5. How would the diameter change if the circumference were doubled?

Tip: Remember, the diameter is always twice the radius of the circle!