Martin sorted the bolts in his toolbox by size. they measured 3/8inch, 1/2inch, 5/8 inch, 7/8 inch ,and 1/4 inch. what is the difference in length between the longest bolt and shortest bolt?

The longest bolt from Martin's toolbox is 7/8 inch and the shortest bolt is 1/4 inch.
Taking the difference between these two
Difference = 7/8 inch-1/4 inch
                   = (7-4)/8 inch
                   =3/8 inch
The difference between the longest bolt from the shortest bolt in Martin's toolbox is 3/8 inch

You have to find the angle i don’t know if i i try

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