Question

please answer this and no spam please
The question is to find the value of the determinant and the expression given when a,b,c are coplanar vectors and a is not parallel to b
the first determinant consists of the values as c.a, a.b, c.b and b.b (just in case the question is not visible)

Answer 1

Answer:

Perimeter of trapezium = 104 m

Length of Non-parallel sides = 18 m and 22 m

Altitude = 16m

Area of Trapezium = 0.5 * (sum of parallel sides)*altitude ------ (1)

Sum of parallel sides = Perimeter - (sum of non-parallel sides) = 104 m - (18+22)m = 104-40 m = 64 m

From (1), Area of Trapezium = 0.5*64*16 = 512 m^2

Ans: Area of trapezium = 512 m^2

Answer 2

Answer:

please answer this and no spam please

The question is to find the value of the determinant and the expression given when a,b,c are coplanar vectors and a is not parallel to b

the first determinant consists of the values as c.a, a.b, c.b and b.b (just in case the question is not visible)