THIS IS IMPORTANT HELP WITH THE WORKING

a.) 36cm²

b.) 12cm²

Step-by-step explanation:

In order to find the area of the triangles, we can use the formula 1/2(base x height)

1/2(4x6) = 12

In order to find the area of the shaded region, we must first find the area of the entire rectangle, which can be found with the formula (length x width)

6 x 10 = 60

Next, we can subtract the areas of both triangles from our answer

60 - 12 - 12 = 36