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o-na [289]
3 years ago
7

The perimeter of an irregular shape with 4

Mathematics
1 answer:
sdas [7]3 years ago
4 0

Answer:

9

Step-by-step explanation:

Three sides are

  • 4cm
  • 2cm
  • 6cm

Let other side be x

\rm \mapsto \: x + 4 + 2 + 6 = 21 \\ \rm \mapsto \: x + 6 + 6 = 21 \\   \rm \mapsto \: x + 12 = 21 \\  \rm \mapsto \: x = 21 - 12 \\  \rm \mapsto \: x = 9

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