Consider this rectangle. The perimeter is P = 2(3) + 2(6) = 18 cm.
Suppose the dimensions of the rectangle are all multiplied by 4.
The new rectangle would have the dimensions
The perimeter of the new rectangle would be _ cm.
The new perimeter will be ___ times as large as the perimeter of the original rectangle .

new dimentions = 12, 12, 24, 24

new perameter  = 72cm

new perameter will be 4 times as large as the original

Step-by-step explanation:

2(3*4) + 2(6*4) = 24+48 = 72

72/4 = 18

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