What is the radius of the circle whose equation is x2 + y2 = 8? 2 4 64

Question

What is the radius of the circle whose equation is x2 + y2 = 8?

2 4 64

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2022-05-14T02:24:02+00:00 2 Answers 0

Answers ( 2 )

  1. Harper
    0
    2022-05-14T02:25:05+00:00

    Answer:

    The equation of circle of radius r whose centre is the origin (0, 0) ,

    It is given by: [tex]x^2+y^2 =r^2[/tex] ……[1]

    Given the equation: [tex]x^2+y^2 =8[/tex]

    To find the radius of the circle;

    Compare the given equation with [1] we have;

    [tex]r^2 = 8[/tex]

    Taking square root both sides we get;

    [tex]r = sqrt{8} = 2sqrt{2}[/tex] units

    Therefore, the radius of the circle is, [tex]2sqrt{2}[/tex] units

  2. Valentina
    0
    2022-05-14T02:25:46+00:00

    It would be
    [tex] sqrt{8} [/tex]
    Or
    [tex] 2sqrt{2} [/tex]

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