A marching band's practice was interrupted by bad weather on 28% of days they practiced. If the weather was bad for 42 days, what was the total number of days the marching band practiced?

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

31 is prime. and it’s prime factorization is just 31.