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natali 33 [55]
4 years ago
10

Will

Mathematics
1 answer:
Jet001 [13]4 years ago
3 0

Answer:

b=3.1cm

Step-by-step explanation:

2a+b=15.7

a=6.3

2*6.3+b=15.7

12.6+b=15.7

b=3.1cm

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