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Answer :

Answer:

Third side = 3√3

Step-by-step explanation:

Apply pythagorean theorem, which is a² + b² = c²

Where,

a = ?

b = 3

c = 6

Substitute

a² + 3² = 6²

a² = 6² - 3²

a² = 27

a = √27

a = √(9 × 3)

a = 3√3