3. An equilateral triangle has each of its sides of length 4 cm. If (x, y) (r =1,2,3)
& % 11
are its vertices, then the value of xy Y2 1. is
(a) 192
(b) 768
(c) 1024
(d) 128

3. An equilateral triangle has each of its sides of length 4 cm. If (x, y) (r =1,2,3)
& % 11
are its vertices, then the value of xy Y2 1. is
(a) 192
(b) 768
(c) 1024
(d) 128