83+1
85-1
1*84
2*42
3*28
4*21
7*12
etc
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They are: 100-16 = 84
(42,2)(28,3)(21,4)(14,6)(12,7)
42 times 4 equals 168, but so does 2 times 84.
7 feet there are 12 inches in a foot so every 12 inches makes a foot. we can count by 12s til we reach 84 and see how many 12s we used or divide 84 by 17 84/12=7 84 inches = 12 feet
84 x 84 = 7056