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3 years ago

Select the correct answer.

Mathematics

1 answer:

lianna [129]3 years ago

6 0

Answer: length is 15 inch

Step-by-step explanation:

P=42

P= 2*(a+b)

b=6 inch width

a=? length

P/2=a+b

21=a+6

a=21-6

a=15

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