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Bumek [7]
4 years ago
6

Anybody know the answer? A.3mm. B.7mm C. 8.6mm or D.17.2mm

Mathematics
2 answers:
olga55 [171]4 years ago
7 0
Remember:

At a point at a vertex, the line to the middle is 2/3 of the length. KR is 2/3 of the line, and RM is 1/3. 

25.8/3= 8.6

8.6*2= 17.2

"D" is the answer.

I hope this helps!
~kaikers
natulia [17]4 years ago
3 0
Its 12.9!!!!!!!!!!!!!!!!!!!!!!!!!!!
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