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Mathematics

1 answer:

krek1111 [17]4 years ago

7 0

Answer:

4.45

Step-by-step explanation:

$theorem \: pythagoras \\ \sqrt{5.1 {}^{2} } + \sqrt{} {5.7}^{2} \\ bc = 7.65 \\ bd = 7.65 - 3.2 \\ bd = 4.45$

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