all sides added up, 5+5=10+8=18 now the bottom, since the two sides are both 10 inches we can safely assume the other two will be 10 inches aswell, so 10+10+10+10=40.
The answer is 465 The top of the 5x5 is 25 plus The sides 40x4 is 160 The bottom part is 100x2 (top and bottom are 100) 200 And the sides are 20x4 so 80 added all is 465
