Question

find the circumference of the circle X2+y2=64​

Answer 1

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Equation of a circle of radius (r) centered at the origin is x²+ y² = r²……………(1)

But the equation of the given circle is x² + y² = 64………………….(2)

Compatible the equation (1) and equation (2).

r² = 64 =>. r =√64 = 8 units. $\sf\green{Answer}$

Answer 2

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