We need to see the graph to be able to answer the question
Dude use the formula of height and distance to find the height of the trangle and then you can find the other side length using Pythagorus theorem
6-4 because the equation for slope is m=y2-y1/x2-x1
It is the area of two triangle and one rectangle
area of a triangle is 1/*b*h
A=1/2*1.9*2.8=2.66 ft^2 multiply it by 2 as we have 2 triangle= 5.32 ft^2
Area of a rectangle=w*l=3.2*2.8 =8.96 ft^2
Add them =8.96+5.32=14.28ft^2