attached. It is just part a i am attempting for now.
area of trapezoid = h(b1+b2 / 2)
where h is height, b1 is base one and b2 is base two.
The Attempt at a Solution
i really tried, i didn't know where to start. the answer i got was 30cm for base, while the correct answer was 20cm for base and sides. I am not sure where to go with this problem my first try was a guess and obviously didn't work properly. I think maybe i need someone to better explain this problem to me.