Finding Rectangle perimeter
2 1/2 L
1 1/2 W

8 (whatever unit it is)

Step-by-step explanation:

First, know that there are two lengths and two widths in a rectangle

Second, multiply length by two to find the total of both lengths

Third, multiply width by two to find the total width

Lastly, add both units to get your answer

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