2007-10-20 08:43:08 · 6 answers · asked by Anonymous in Science & Mathematics ➔ Mathematics
You first take the two sets of coordinates. Use distance formula between those two points. Then plug that in for the diameter. Remember the formula for circumference of a circle is (Pie multiply with diameter) Pie=3.14
The distance formula is
square root of (y^2+y^1)^2+(x^2+x^1)^2.
2007-10-20 08:48:50 · answer #1 · answered by Anonymous · 0⤊ 0⤋
Given the two coordinates, find the distance between them. Once you have the distance, which you said is the diameter, multiply that length times pi and you'll get the circumference.
Edit= The area of a circle is pi*(radius squared), not the circumference as the first person pointed out.
2007-10-20 15:48:34 · answer #2 · answered by jason_sehorn 1 · 0⤊ 0⤋
I assume you mean you have two points (a,b) and (c,d) in a Euclidean plane - or you could have points in Euclidean 3d space (a,b,c) (d,e,f). I assume you have enough knowledge of maths to know how to find the distance between two points
1. Find the distance between these points
Sqrt( dx**2 + dy**2 + dz**2)
2) This distance is the diameter, if I read your question right. The circumference is PI*diameter.
2007-10-20 15:52:34 · answer #3 · answered by William B 1 · 0⤊ 0⤋
Find the distance between the 2 point using the distance formula. Then multiply that diameter by Pi.
2007-10-20 15:48:01 · answer #4 · answered by Mathfriend 2 · 0⤊ 0⤋
I SEEM TO REMEMBER THAT TO DETERMINE THE CIRCUMFERENCE OF A CIRCLE WAS PI TIMES RADIUS SQUARED.
2007-10-20 15:47:47 · answer #5 · answered by Loren S 7 · 0⤊ 0⤋
I am assuming you have two points (x1,y1), (x2,y2) that lie in
the circle bound and they describe a diameter
of the circle.... In that case
PI*SQRT( (x1-x2)^2 + (y1-y2)^2 ) = CIRCUMFERENCE
2007-10-20 15:48:38 · answer #6 · answered by Anonymous · 0⤊ 0⤋