What is the circumference of a circle whose radius is 20 feet? Leave answer in terms of π.

A)
10π feet


B)
20π feet


C)
40π feet


D)
100π feet

Respuesta :

[] Answer []

[tex]\boxed{40\pi \ Feet}[/tex]

[] Explanation []

Area = π[tex]r^{2}[/tex]

Pi = 3.14

Radius = 20

Our Equation:

3.14 * 20 * 2

3.14 * 20 = 62.8 * 2 = 125.6

[tex]\boxed{[] \ Eclipsed \ []}[/tex]

The circumference of the circle that has a radius of 20 feet is: C)  40π feet

Recall:

  • The circumference of a circle = 2πr, where, r represents the radius of the circle.

Given:

  • Radius of circle = 20 feet

To find the circumference of the circle in terms of π, plug in the value of r into 2πr.

  • Thus:

Circumference of circle = 2 × π × 20

Circumference of circle = 40π feet

Therefore, the circumference of the circle that has a radius of 20 feet is: C)  40π feet

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