Answer:
184.86
Step-by-step explanation:
Surface area of the two triangles = 2* 1/2(4.3)(5.2) = 22.36
rec 1 = 5.2*10 = 52
rec 2 = 4.3*10 = 43
rec 3 = 6.75*10 = 67.5
Total SA = 22.36 + 52 + 43 + 67.5 = 184.86
