Answer:
If we look at this polygon, we can split this into two triangles (shown in the image I attached below)
Formula for area of a triangle;
A = BH x 1/2
Where 'b' represents the base, and 'h' defines is the height.
Plug in values;
A = 40(5) x 1/2
A = 200 x 1/2
A = 200/2
A = 100, since there are double of these triangles,
100 x 2
= 200 cm2
