What is the length of the paintbrush in centimeters? A. 16,200 cm
B. 1,620 cm
C. 16.2 cm
D. 0.162 cm

D. 0.162 cm

Step-by-step explanation:

its correct

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if the length of the brush is = 16.2m

then in cm it is  1,620cm

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