Final answer:
The radius (r) of a circle with a circumference (C) of 15 can be found by dividing the circumference by 2π. Using 3.14 as an approximation for π, the radius calculates to approximately 2.39 when rounded to the nearest hundredth.
Step-by-step explanation:
To find the radius r of a circle with a given circumference C of 15, we can use the formula C = 2πr. Substituting 3.14 for π (pi) and 15 for the circumference, the equation becomes 15 = 2 × 3.14 × r. To solve for r, divide both sides by 2π (2 × 3.14), which gives us:
r = \( \frac{15}{2 × 3.14} \)
Carrying out the division gives us:
r = \( \frac{15}{6.28} \) ≈ 2.38853503184713
However, we want to round the answer to the nearest hundredth, which gives us:
r ≈ 2.39