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What is the exact circumference of the circle?

10π ft

20π ft

40π ft

60π ft
Circle with center A and diameter of 20 feet labeled.

Respuesta :

dexteright02
Data:

Formula: diameter = 2*radius

Formula: (Circle length)
[tex]C = 2* \pi *r[/tex]

Solving: Using the data
diameter = 2*radius
20 = 2*r
2r = 20
[tex]r = \frac{20}{2} [/tex]
[tex]\boxed{r = 10\:ft}[/tex]

Now, replace in the circumference length formula
[tex]C = 2 \pi *r[/tex]
[tex]C = 2 \pi *10[/tex]
[tex]\boxed{\boxed{C = 20 \pi \:ft}}\end{array}}\qquad\quad\checkmark[/tex]

Answer:
The exact circumference of the circle is [tex]20 \pi \:ft[/tex]

The exact circumference of circle A is;

Option B: 20π ft

Formula for circumference of a circle is;

C = 2πr

We are given;

Diameter; d = 20 ft

Now, radius is; r = d/2

r = 20/2

r = 10 ft

Thus;

C = 2 × π × 10

C = 20π ft

In conclusion, the exact circumference of the circle A is 20π ft.

Read more about circumference of a circle at; https://brainly.com/question/12823137

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