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backseatdog
8) a regular dodecagon has 12 equal sides.  So if one side is 9.25 cm, a formula we can use is:
P = 12*9.25, which is:
P = 111 cm

9) A rhombus has four equal sides, so a formula we can use is:
P = 4*1.75, which is:
P = 7 yd

10) A paralleogram has four sides where opposite sides are equal, so a formula we can use is:
P = 2*10.4 + 2*5.6, which is:
P = 32 m
taterbug7

8) a regular dodecagon has 12 equal sides.  


9) A rhombus has four equal sides


10) A parallelogram has four sides where opposite sides are equal

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