If AABC is reflected across the y-axis, what are the coordinates of A'?

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

it could be 1,3 and more others to create a cylinder.

step-by-step explanation:

thats not a system of equations, that is a solution