We suspect that 'A' is not equal to 7 9, but that (7, 9) are
the coordinates of 'A'. Same for 'B'.
If that's true, then the two points are 5 units apart.
12
If you mean endpoints of (-1, -3) and (11, -8) then the length works out as 13
Draw the circle O, and the chord AB. From the center, draw the radius OC which passes though the midpoint, D, of AB. Since the radius OC bisects the chord AB, it is perpendicular to AB. So that CD is the required height, whose length equals to the difference of the length of the radius OC and the length of its part OD. Draw the radius OA and OB. So that OD is the median and the height of the isosceles triangle AOB, whose length equals to √(r2 - AB2/4) (by the Pythagorean theorem). Thus, the length of CD equals to r - √(r2 - AB2/4).
Assuming A, B and C are consecutive points on a straight line, AB would be 49 mm
12
24
17
14
It would be a straight line of length bc
It is the additive property of equality, as the additive property of length, as applied to adjacent or parallel line segments.
End points: (-2, -4) and (-8, 4) Length of line AB: 10
perpendicular
12
14
12
Using the distance formula the length of ab is 5 units
4.9