7/5 x 8 (do not reduce your answer)

56/5   or 11 1/5

Step-by-step explanation:

8 can also be 8/1, so since this is multiplying fractions, we do numerator times numerator and denominator x denominator.

7 x 8 = 56

5 x 1 = 5

5 can go into 56 11 times, so 11 will be the whole number. 55 subtracted from 56 is 1, so the fraction part of the mixed number is 1/5

11 1/5

answer: 72: 111

step-by-step explanation:

to find the perimeter, you add up all the lengths of the sides. in this case you would have to add up 18+22+40+80 which equals 160.