Math Problem Statement

The radius of a circle is 5.8 in. Find the circumference to the nearest whole number.

Solution

The image shows a problem asking to calculate the circumference of a circle, given a radius of 5.8 inches, and to round the answer to the nearest whole number.

The formula for the circumference CC of a circle is:

C=2πrC = 2\pi r

where rr is the radius, and π\pi is approximately 3.1416.

Let's calculate the circumference:

C=2×3.1416×5.8C = 2 \times 3.1416 \times 5.8

I'll compute that now.The circumference of the circle is approximately 36 inches when rounded to the nearest whole number.

Would you like any more details or have any questions?

Here are 5 related questions for further practice:

  1. What is the area of a circle with a radius of 5.8 inches?
  2. How would the circumference change if the radius doubled?
  3. What is the circumference of a circle with a diameter of 10 inches?
  4. How do you calculate the radius if the circumference is given?
  5. What is the circumference of a circle with a radius of 7.3 inches?

Tip: Always remember that the circumference depends linearly on the radius. Doubling the radius doubles the circumference.

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Math Problem Analysis

Mathematical Concepts

Geometry
Circle
Circumference

Formulas

C = 2 * π * r

Theorems

The Circumference Theorem

Suitable Grade Level

Grade 6-8