Show that (4-√3)(4+√3)/√13 simplifies to root 13

13 is a prime number, there is no simpler form for its square root .

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You have 2 sides that are 2 cms and you have 6 sides that are 1/2 cm and you have 4 sides that are 1 cm. the smallest sides are 1/2 the medium sized sides are 1 and the smallest are 1/2. so to find the perimeter you have to add them all up together so your answer will be 11 cm's