Difficulty: Medium
Average Score: 79%
Entry Exam
Passage / Scenario
What is the area of a circle with a diameter of 16 inches in terms of pi (?ÅÔé¼)?
Correct answer
B
Rationale
To calculate the area of a circle, you use the formula A = ?ÅÔé¼r^2, where r is the radius of the circle. Since the diameter is given as 16 inches, the radius (r) is half of that, which is 8 inches. By substituting r = 8 into the formula, you calculate the area as A = ?ÅÔé¼(8)?? = 64?ÅÔé¼ square inches. Therefore, the correct answer is 64?ÅÔé¼ in squared (Choice B). This calculation is derived from the concept of the radius being half of the diameter in a circle formula.