What is the length of chord sy in OP below? A. 3.2 units
B. 3.5 units
O c. 7 units
O D. 6.4 units

et's say we had point A at (0,0). It is exactly 1 unit away from the vertical line x = 1. We move 1 unit to the right to land on this mirror line, and then move another unit to arrive at A ' (2,0)

So A(0,0) moves to A ' (2,0) after mirroring over the line x = 1.

Then note the distance from A ' (2,0) to the second mirror line x = 5 is 3 units. We'll move 3 units to the right to land on this second mirror line, and then another 3 units to the right to arrive at A '' (8,0)

Step-by-step explanation:

The correct option is C . The length of chord ST in P is 7 units.

Given information: QR=7, distance between center and QR is 3.2 units and the distance between center and ST is 3.2 units.

If two chords are equidistant from the center of the circle, Then the length of both chords are same.

From the given figure it is clear that the two chords QR and ST are equidistant from the center of the circle , so the length of both chords are same.

• QR = ST .

• 7 = ST .

• The length of chord ST in P is 7 units.

• Therefore the correct option is C .