Question

true or false? the formula for the circumference can be written as \\(c = 2\pi r\\) or \\(c = \pi d\\).

Explanation:

Analyze the given formulas

$$ C = 2\pi r \quad \text{and} \quad C = \pi D $$

Relate diameter and radius

$$ D = 2r $$

Verify the equivalence

$$ C = \pi D = \pi (2r) = 2\pi r $$

Answer:

• True (Correct answer)
• False