Math Problem Statement

Find the circumference of the circle. Use 3.14 for π. Round to the nearest tenth.

Solution

To find the circumference of a circle, we use the formula:

C=2πrC = 2 \pi r

where CC is the circumference and rr is the radius of the circle.

Given that π\pi is approximated to 3.14, we substitute this value into the formula:

C=2×3.14×rC = 2 \times 3.14 \times r

If we have the value of the radius rr, we can calculate the circumference. Since the radius is not provided, let's use a general form:

C=6.28×rC = 6.28 \times r

To round the result to the nearest tenth, we simply apply the rounding rules to the final answer obtained after multiplying 6.28 by the given radius.

Please provide the radius of the circle so that we can complete the calculation.

Would you like more details or have any other questions?

Here are 8 related questions to consider:

  1. What is the radius of a circle if its circumference is known?
  2. How do you convert a diameter to a radius?
  3. What is the formula for the area of a circle?
  4. How does changing the radius affect the circumference?
  5. What are the units of circumference if the radius is given in meters?
  6. How do you find the diameter of a circle if the circumference is known?
  7. Can you explain the relationship between radius, diameter, and circumference?
  8. How does the value of π affect the calculation of circumference?

Tip: When rounding to the nearest tenth, look at the hundredths place to determine if you round up or down.

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Math Problem Analysis

Mathematical Concepts

Geometry
Circle Geometry

Formulas

Circumference of a circle formula: C = 2πr

Theorems

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Suitable Grade Level

Grades 6-8