Respuesta :
Answer:
The formula is Area = base+base/2 x height.
Step-by-step explanation:
This means that we need to add both bases, then  divide that by 2. The quotient of that gets multiplied by the height, and you have your answer.
Answer:
- ½h(a+b)
Step-by-step explanation:
½×8.4(11.2+15.2)
4.2 Ă— 26.4
105.68