Q. What is the radius of the circle x2+y2=36?Simplify any fractions.____
Given equation: The given equation is x2+y2=36. This equation represents a circle centered at the origin (0,0) with a radius r. The general form of a circle's equation is (x−h)2+(y−k)2=r2, where (h,k) is the center of the circle and r is the radius. By comparing the given equation with the general form, we can see that h=0, k=0, and r2=36.
Comparison with general form: To find the radius r, we need to take the square root of r2. The square root of 36 is 6. Since the radius of a circle is always a positive value, we disregard the negative square root.r=36=6
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