SOLUTION: Hi, I have to find the standard form of a circle with center (6, -3) and diameter {{{20sqrt(2)}}}.
Since the standard form of a circle is:
{{{(x - h)^2 + (y - k)^2 = r^2}}}
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Question 370517: Hi, I have to find the standard form of a circle with center (6, -3) and diameter .
Since the standard form of a circle is:
and diameter = ,
I am getting this wrong and no clue why :(
Thanks for your help!
Answer by jim_thompson5910(35256) (Show Source): You can put this solution on YOUR website!
The left side is correct. The right side is where you're going wrong. Note: the diameter is and NOT
Since the diameter is , this means that the radius is half of this at
So
Now square 'r' to get
So
This means that the equation of the circle is
If you need more help, email me at jim_thompson5910@hotmail.com
Also, feel free to check out my tutoring website
Jim
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