Question

What is the equation of a circle centered at the origin with radius 15?

Answer 1

x^2+y^2=225 is the equation of circle

Answer 2

Answer:

$Required \: equation\:of\:the\:circle:\\</p><p> x^{2}+y^{2}=225$

Step-by-step explanation:

$Equation \:of \:a\:circle\\centered\: at \: the \: origin \:is\\ x^{2}+y^{2}=r^{2},\\where \: r \: is \: radius \: of\:the \:circle$

$Here,\\Radius(r)=15$

$Required \: equation\:of\:the\:circle\\x^{2}+y^{2}=15^{2}$

$\implies x^{2}+y^{2}=225$

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