The equation of a circle centered at the origin is x2 + y2 = 16. What is the radius of the circle?A.8B.16C.4D.256
Accepted Solution
A:
Answer:The radius of circle is 4 Step-by-step explanation:Given as :The equation of circle is given as :x² + y² = 16 Now The standard equation of ( x - h )² + ( y - k )² = r² where h , k are center of circle r is the radius of circle From given circle equation x² + y² = 16 can be written as ( x - 0 )² + ( y - 0 )² = (4)² So, The center of this circle is ( h , k ) = ( 0 , 0 ) And radius of circle = 4 Hence The radius of circle is 4 Answer