This is hard and I don't know how to do it! it is due today.

Answer:
Step-by-step explanation:
remove the area of the missing triangle from the area of the whole rectangle
Rectangle Area ( b*h) = 10 * 20 = 200m²
Right Triangle area (C1 * C2 : 2) 20-16=4=c1
10-8=2=c2
4*2:2=4m² (triangle area)
200 - 4 = 196m²
or you can solve with this expression:
10*20-[(20-16)*(10-8):2] =
196m²
Answer:
20
Step-by-step explanation:
Times the height by the width