Find the area of the quadrilateral `A B C D` whose vertices are respectively `A(1,\ 1),\ B(7,\ -3),\ C(12 ,\ 2)` and `D(7,\ 21)` .

Find the area of the quadrilateral ABCD whose vertices are respectively A(1,1),B(7,-3),C(12,2) and D(7,21)

Find the area of the quadrilateral ABCD whose vertices are A(1, 1), B(7,-3), C(12, 2), and D(7, 21).

Find area of quadrileteral ABCD whose vertices are respectively A(1;1);B(7;-3);C(12;2) and D(7;21)

If the area of the quadrilateral ABCD whose vertices are A(1, 1), B(7, -3), C(12, 2) and D(7, 21) is Delta . Find the sum of the digits of Delta .

If the area of the quadrilateral ABCD whose vertices are A(1, 1), B(7, -3), C(12, 2) and D(7, 21) is Delta . Find the sum of the digits of Delta .

If the area of the quadrilateral ABCD whose vertices are A(1, 1), B(7, -3), C(12, 2) and D(7, 21) is Delta . Find the sum of the digits of Delta .

Find the area of the quadrilateral ABCD whose vertices are A(1,0),B(5,3),C(2,7) and D(-2,4)

Find the area of the quadrilaterals, the co-ordinates of whose vertices are given below. (1,1),(7,-3),(12,2),(7,21)

Find the area of the quadrilateral ABCD having vertices underset A(1,1),B(7,B(7,-3),C(12,2), and D(7,21)

Find the area of the quadrilateral whose vertices are A(1,1),B(3,4),C(5,-2) and D(4,-7)