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jok3333 [9.3K]
1 year ago
5

Ed galaxy perimeter ​

Mathematics
1 answer:
sp2606 [1]1 year ago
4 0

Answer:

53 mm

Step-by-step explanation:

Perimeter is the sum of the lengths of all its sides.

Let the length of the unknown side be x mm.

123= 25 +45 +x

x= 123 -25 -45

x= 53

Thus, the unknown side is 53 mm.

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