Answer :

joyhw

Answer:

60cm2

Step-by-step explanation:

L=12

W=18

(18x2) + (12x2) =

36 + 24 = 60

=60cm

Sheila35

Answer:

60 cm

Step-by-step explanation:

P =2L +2w

P =2 ×12 +2 ×18

P=24 +36

P=60 cm

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