Question

The top part of a trapezoid is half the bottom part right?

Answer 1

must be 7

Answer 2

it can be, but isn't necessarely. Here, you know that both figures are "similar" (I don't know the word in English), so that means that all side are "x" times bigger in the ROKS trap compared to the MATH one. So since you know the meausre of a same side in both traps, you can find "x"

Answer 3

calculate OK first using AT and TH
then calculate MH

Answer 4

Thanks guys!