3 years ago

What is the equation of a circle with center (2, -5) and radius 4?

2 answers:

8 0

$Equation\ of\ circle\\\\\
r^2=(x-a)^2+(y-b)^2\\\\
a,b- \ coordinates\ of\ center\ of\ circle\\\\\
(a,b)=(2,-5)
\\\\ r-\ radius\\\\
r=4\\\\Solution:\ 4^2=(x-2)^2+(y+5)^2\\\\\

$

Anna35 [415]3 years ago

4 0

$(x-h)^2+(y-k)^2=r^2\\\\
(x-2)^2+(y+5)^2=16$

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