Final answer:
The diameter of a 15-inch pizza converted to centimeters is 38.1 cm, hence the closest choice is 38 cm.
Step-by-step explanation:
To express the diameter of a large pizza in centimeters, we need to convert inches to centimeters. The diameter of the pizza is given as 15 inches. Knowing that 1 inch is equal to 2.54 centimeters, we can calculate the diameter in centimeters using the following conversion:
15 inches × 2.54 cm/inch = 38.1 cm
So, the correct answer is that the diameter of a large pizza, which is 15 inches, when converted to centimeters is approximately 38 cm.