What is the greatest sensitivity of most calipers?

possible answers:
0.01 inches, or 0.1 mm
0.0001 inches, or 0.001 mm
0.001 inches, or 0.01 mm
0.1 inches, or 1.0 mm

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

may i see the picture? it would a lot, xox