finding perimeter and area

Question

need help on finding the area of thisquestion its 18m 6m 11m 9m and i need to find the area to.

Answer 1

Perimeter is straightforward:

P = 18 + 6 + 11 + 9 = 44m

To calculate the area of an irregular quadrilateral you need the side lengths and the diagonal lengths. Since the diagonal lengths are not provided I'll give the formula.

For:

a, b, c and d are lengths of sides

s is the semiperimeter, s = (a + b + c + d)/2

p and q are the diagonals

A = SQR[(s - a)(s - b)(s - c)(s - d) - 1/4(ac + bd + pq)(ac + bd - pq)]

Answer 2

 i dont GET IT!!!!!!!!ME SADEY