The Gross Domestic Product (GDP) of China was 4.3 trillion dollars in 2008, and has been growing by about 10.8% each year. Write an equation for the GDP of China, in trillions of dollars, t years after 2008.

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

circumference divided by 3.141592654 then timesthe radius twice

step-by-step explanation:

circumference divided by 3.141592654 then timesthe radius twice

answer: 819.89 miles across america

step-by-step explanation: