Answer:
Step-by-step explanation:
9*21*2+18*9*2+21*18+35*20+(35*20-21*18)+35*15*2+15*20*2
= 378 + 324+ 378 + 700 + 700 - 378 + 1050 + 600
= 3752
hope i helped pleae mark brainliest
2
it like trying to imagine re-folding back a cardboard box
16 percent of times are between 6 and 22
