Start by finding the slope of the given equation by putting it into slope intercept form (which is y=mx+b). perpendicular lines have slopes that are opposite reciprocals of each other, so if the slope of one line is -1/2, the slope of the like perpendicular to it will be 2/1 (or just 2). your answer (in point slope form) should be: y-6 = -(3/4)(x-2), and you can adjust it if it needs to be in standard form (ax+by=c) or slope intercept form (y=mx+b).
first of all you are gonna make that into two rectangle by slicing the top off if that makes sense so you now have a large rectangle (11×12) and a small one (3×8) now you use the area formula for rectangles base×height so the small one becomes (3×8)=24 and the large one is (11×12)=132. now to make them into one shape for the total area you add those two values 132+24=156 so your total area is 156m²