(1/2)(10t) = 5
solve the equation above for t.

(1/2)(10t)=50000
(10t)/2=50000
5t=50000
divide both sides by 5
t=10000

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