10 hours to 6 hours. What is the percent of Change

40% decrease

Step-by-step explanation:

10% = 1

(multiply by 6)

60% = 6

100% - 60% = 40%

over the argument its not good to fight.

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