Q. A circle in the xy-plane has the equation (x−0.8)2+(y−5.2)2=1.69. How long is the radius of the circle?
Circle Equation Standard Form: The equation of a circle in the standard form is (x−h)2+(y−k)2=r2, where (h,k) is the center of the circle and r is the radius. The given equation is already in this form, with h=0.8, k=5.2, and r2=1.69.
Find Radius: To find the radius r, we need to take the square root of r2. The square root of 1.69 is 1.3.Calculation: r=1.69=1.3
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