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ddd [48]
3 years ago
12

I don’t get this can someone explain this

Mathematics
1 answer:
LekaFEV [45]3 years ago
3 0

Answer:

15.7 units

Step-by-step explanation:

AB = 6, BC = 3

Therefore by Pythagoras theorem

AC = \sqrt{45}

perimeter \: of \:  \triangle \: ABC \\  = 6 + 3 +  \sqrt{45}  \\  = 9 + 6.70820393 \\  = 9 + 6.7 \\  = 15.7\: units

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