Final answer:
The circumference of a circle with a radius of 5 is found using the formula C = 2πr. Substituting the value of the radius, the circumference is calculated to be approximately 31.4. Thus, the correct answer is A) 31.4.
Step-by-step explanation:
The student has asked to find the circumference of a circle with a radius of 5. To calculate this, the formula for the circumference C of a circle is C = 2πr, where π (pi) is approximately 3.14159 and r is the radius of the circle. In this case, we substitute the value of the radius into the formula C = 2π(5), which equals 2 × 3.14159 × 5 or about 31.4.
Therefore, the answer is A) 31.4.