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Vanyuwa [196]
3 years ago
7

The equation for the circle below is x² + y2 = 16. What is the length of the circle's radius?

Mathematics
2 answers:
ankoles [38]3 years ago
5 0

Answer:

4

Step-by-step explanation:

Nina [5.8K]3 years ago
4 0

Answer:

radius = 4

Step-by-step explanation:

Recall that the equation of a circle centered at (0,0) on the plane is given by the formula:

x^2+y^2=r^2

where "r" is the radius of the circle.

S, in our case, since the equation reads:

x^2+y^2=16

16 corresponds to the square of the circle's radius. Therefore the radius can be found via:

r^2=16\\r=+/-\sqrt{16\\}\\r=+/-4

and since we are talking about the length of a radius, we choose the positive option for the answer: radius = 4

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