Find the area of the triangle whose vertices are

(2, 3) (-1, 0), (2, -4)

Find the coordinates of centroid of the triangle with vertices following:

(6, 2), (0, 0) and (4, -7)

Find the coordinates of centroid of the triangle with vertices following:

(1, -1), (0, 6) and (-3, 0)

Find the area of the triangle whose vertices are

(-5, -1), (3, -5), (5, 2)

Find the area of the triangle whose vertices are

(0, 0) (3, 0) and (0, 2)