Answer:
First shape : 204cm^2
Second shape : 57in^2
Step-by-step explanation:
For the first shape :
The front and back triangles are 3 * 8 / 2 which gives us 12 on each side.
The side rectangles are 5 * 10 which is 50 on each side.
The bottom rectangle is 10 * 8 which is 80.
Add them all up and you get 204.
For the second shape :
The triangles are all congruent and the area is 3 * 8 / 2, so we get 12 on each side.
Then the bottom square is 3^2, which is 9.
Add them all up together and you get 57.
