Answer:
Triangle:
In order for you to solve all of them you need to multiply the base times the height then divide that in half.
example answer;
3 is 68 because you multiply 17 by 8 then divide in half.
Decomposition of the trapezoid to find the area. You first need to separate the parts of the trapezoid that make a triangles. Ex: separate the outer parts so that you're left with triangle/s and a rectangle/square shape in the middle. Find the area of the triangles and the area of the middle square/rectangle and then add that together.
8. 171 I used this formula A=(a+b)h/2 Which is top length+bottom length times height divided by two.
Trapezoid area:
You need to add the top base and the bottom base together then multiply that by the height.
9. 396. I used the same formula as the last one. which is A=(a+b)h/2.
I hope I could help you :)
Step-by-step explanation:
