10
QuizMultiple Choice

Topic Test

Question 10 • Mathematical Models with Applications - MA4072 CR

The radius of a circular ring is 4 feet. What is the circumference?

Answer
A
12.15 feet
B
12.56 feet
C
30.43 feet
D
25.12 feet

Explanation

The circumference of a circle is C = 2πr. With a radius of 4 feet, C = 2 × π × 4 = 8π ≈ 25.13 feet. The closest listed value is 25.12 feet, choice D.

AI-written and checked against the verified answer.

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