Answer:
15.5cm² for number one
Step-by-step explanation:
I will only do number one for you but here how you do it
1/2 (12+9) 10.
The 12 and 9 come from the top and bottem number and 10 come from the total height
Then we need to calucate
1/2(12+9)+10
1/2*21+10
1/2*31
31/2
15.5
So 15.5cm² is the answer for the first one now I think you can do the rest!
