Write a subtraction problem that has mixed numbers and requires renaming. draw a model illustrating the steps you take to solve the problem

5(1/2) - 2 (1/4) =

11/2 - 9/4 =

22/4 - 9/4 =

13/4 or 3 (1/4)

56.6

step-by-step explanation:

the ratio of the perimeters is equal to the scale.

the ratio of the areas is equal to the square of the scale.

34 / 20 = k

a / 19.6 = k²

substituting:

a / 19.6 = (34 / 20)²

a = 19.6 (34 / 20)²

a ≈ 56.6