Final answer:
The circumference of a 26-inch diameter circle is calculated using the formula C = 2πr, leading to the answer of 26π inches.
Step-by-step explanation:
The question requires calculating the circumference of a circle with a given diameter of 26 inches. The formula to find the circumference (C) of a circle is C = 2πr, where r is the radius of the circle and π (pi) is approximately 3.14159. Since the diameter is given as 26 inches, the radius (r) is half of the diameter, which is 13 inches.
Using the formula, we substitute 13 inches for r to get the circumference.
C = 2π(13 inches).
C = 26π inches.
Therefore, the correct answer to the question is option b, which is 26π inches.