Answer:
12.57
Step-by-step explanation:

What be more specificx or take a picture
Answer:
18 centimeters
Step-by-step explanation:
Divide the circumference by π, or 3.14 for an estimation. The result is the circle's diameter.
Divide the diameter by 2.
There you go, you found the circle's radius
The definition of a coefficient is the number BEFORE the variable. So in 76x^2, the coefficient is 76.<span>
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Im assuming the problem is x^2-16, which would be factored to (x-4)(x+4)