You have to break it down into their individual shapes 1st there are two triangles To find the area for one of them 1/2bh. Or 1/2(4)(6()=12 Multiply the 12 by 2 The area for both triangles are 24 Although there are three triangles, you have to realize that only two of them have the same area The base is 6*12=72 and there is only one of them The two side rectangles are 5*12=60 multiply by 2 since there are 2 120
Add all of the areas together 24+72+120=216 Surface area 216 u^2