so is how I would solve this is one corner at a time. Since these are all triangles you will solve the area of a corner and divide it by 2. Then you will have the area of a corner.
(7.5 x 5) /2= 18.75 (7.5 x 14) /2=52.5 Mirror this on the other side because they are the same on the other side and then add them all together
