A=2b+C, Find the value of a if b=5x10 to the power of -2 and C=2x10 to the power of -1, write your answer in standard form

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