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dimaraw [331]
3 years ago
8

Equivalent ratio

Mathematics
1 answer:
Brums [2.3K]3 years ago
3 0
What are the choices that I’m supposed to choose between
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QUICK!<br>URGENT HELP PLEASE!<br>20 POINTS​
tino4ka555 [31]

Answer:

840

Step-by-step explanation:

The 3 by 3 grid below shows nine 1 cm x 1 cm squares and uses 24cm of wire

24 cm of wire

is  3 (3 + 1)  + 3(3 + 1)

= 3 x 4 + 3 x 4

=  12 + 12

= 24 cm

length of wire is required for a similar 20 by 20 grid

= 20(20 + 1)  + 20(20 + 1)

= 20 x 21 + 20 x 21

= 420  + 420

= 840  cm

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JulsSmile [24]
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F. .0066

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