Me with this i’m not sure if i’m right

Number 2 it should be 15-12 not 12-15 cause' percent does not have a negative number

2 should be 15-12 biggest number goes on top

You need to divide 210 square inches by 35 inches and that’s going to give you 6 inches and that’s the length of the hypothenuse of the right triangle i hope that this you : )