If vertices of a quadrilateral are at `A(-5, 7), B(-4, k), C(-1, -6) and D(4, 5)` and its area is 72 sq. units. Find the value of k.

Four vertices of a quadrilateral are (1,2), (-5,6), (7,-4) and (k,-2) and its area is zero. Find the value of k.

The vertices of a triangle are (1,-3), (4,k) and (-9,7) . If its area is 15 sq units, find the value of k.

If A(-5, 7), B(-4, -5), C(-1, -6) and D(4, 5) are the vertices of a quadrilateral, find the area of the quadrilateral ABCD.

The four vertices of a quadrilateral are (1,2) (-5,6) (7,-4) and (k,-2) taken in order. if the area of the quadrilateral is 9 sq. units find the value of k.

The four vertices of a quadrilateral are (1,2),(-5,6),(7,-4) and (k,-2) taken in order.If the area of the quadrilateral is zero,find the value of k.

If the vertices of a triangle are (1,2),(4,k)and(7,8) and its area is 15 sq. units, then the value(s) of k is