Answer:

Step-by-step explanation:
<h3>Definition(s):</h3>
1. <em>Circumference</em>
The outer boundary, especially of a circular area; <em>perimeter</em>.
2. <em>Radius</em>
A straight line extending from the center of a circle or sphere to the <em>circumference</em> or <em>surface</em>.
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<h2>solution</h2>
The circumference of a circle can be obtained by using the equation below:

where the mathematical constant,
, has a value of approximately 3.14 and
represents the radius of the circle.
All we have to do is multiply the given radius by two and multiply that value by
to determine C:



Answer:
63 degrees
Step-by-step explanation:
1. -2 I hope that helps a little bit
50 over 360 * 7.2*pi = 3.14159...
Answer:
D. 28x + 14 + 3 = - 67
Step-by-step explanation:
Given 7 ( 4x + 2 ) + 3 = - 67
our first step would be to distribute the 7
7 * 4x = 28x
7 * 2 = 14
we would be left with 28x + 14 + 3 = -67 which corresponds with "D"