The sales tax in kadisha's state is 5%. kadisha says she computes a 15% tip by multiplying the tax shown on her bill by 3. for a bill with a tax charge of $.38, kadisha's tip is $.38 times 3 = $1.14. why does kadisha's method work?

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