Let's first reformat it:
x2 + y2 - 12x - 8y - 43 = 0
x2 - 12x + 36 + y2 - 8y + 16 = 43 + 36 + 16
(x - 6)2 + (y - 4)2 = 95
So this equation defines a circle, with a center point at (6, 4) and a perimeter (i.e. circumference) of √95.
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22n + 2.
A triangle with sides of 2.4, 2.4 and 3.4, will have a perimeter of 8.1. Remember to include the unit of measure in your answer.
Perimeter equals 2 Length plus 2 width so find what l a w is then multiply them
k = 0.1
If a perimeter of 8 is obtained by adding 5 and unknown number, then the unknown number is 3.2.