akhtar has 65 pounds ben has 100 pounds carl has three 5 pound notes one 20 pound note and some 10 pound notes the mean amount of money per person is 80 pounds how many 10 pound notes does carl have​

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