Answered

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The perimeter of an irregular shape with 4
sides is 21 centimeters. Three of the side
lengths are 4 centimeters, 2 centimeters, and
6 centimeters. What is the length of the
unknown side?

HELPP

Sagot :

Answer:

9

Step-by-step explanation:

Three sides are

  • 4cm
  • 2cm
  • 6cm

Let other side be x

[tex] \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[/tex]

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