If (x - h) = 4 and (y - k) = 3, what is the radius of the circle above?

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asked Jul 19, 2018 116k views

2 votes

If (x - h) = 4 and (y - k) = 3, what is the radius of the circle above?

Mathematics
high-school

Wolter asked

by Wolter

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1 Answer

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(x-h)²+(y-k)²=r² is the equation of a circle with radius of r

so if x-h=4 and y-k=3 then

4²+3²=r²
16+9=r²
25=r²
sqrt both sides
5=r
radius is 5 units

Lundahl answered Jul 26, 2018

by Lundahl

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