Find the odd one: A) πr², B) 2πr, C) 4πr², D) πd
Q1. Find the odd one: A) πr², B) 2πr, C) 4πr², D) πd
Answer: πd
Explanation: The formulas πr², 2πr, and 4πr² are related to the area and circumference of a circle or sphere, while πd is diameter times π.