so just find the measues of the faces 15 times 4=rightmost face 9 times 4=oposite face 9 times 4=lower top face to find topmost face 15-9=6 4 times 6=topmost face sides can be split up into 2 rectangles 15 by 9 and 6 by 6 2 of them 2 times (15 times 9+6 times 6) bottom=15 times 4 not seen face=6 times 4
total area=(15 times 4)+(9 times 4)+(9 times 4)+(4 times 6)+(2 times ((15 times 9)+(6 times 6)))+(15 times 4)+(6 times 4) total area=60+36+36+24+(2 times (135+36))+60+24 total area=60+36+36+24+(2 times 171)+60+24 total area=60+36+60+342+60+24 toal area=582
