On a math test 12 students earned an a this number is exactly 25% of the total number of students in the class how many students are in the class

What do jane knows to plan her visit

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