9 x (3 + 6)= (9×4) +( 9 × 6)
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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

Its d so thats how it would would back from 1.0 form three four two