Hello!
What is the exact circumference of the circle?
A.
10π feet
B.
20π feet
C.
40π feet
D.
60π feet
Solving: Using the data (Circle with center A and diameter of 20 feet labeled).
diameter = 2*radius
[tex]20 = 2*r[/tex]
[tex]2\:r = 20[/tex]
[tex]r = \dfrac{20}{2}[/tex]
[tex]\boxed{r = 10\:ft}[/tex]
Formula: (Circle length)
[tex]\boxed{C = 2* \pi *r}[/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:
B. 20π feet
[tex]\underline{The\:exact\:circumference\:of\:the\:circle\:is\:\:20\:\pi\:ft}[/tex]
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I Hope this helps, greetings ... Dexteright02! =)