Anasa satellite showed that in 2009 the ozone hole over antarctica had a maximum surface area of 24.1 million square kilometers. the largest ozone hole on record occurred in 2006 and had a surface area of 29.6 million square kilometers. calculate the difference in diameter (in meters) between the ozone hole in 2009 and 2006.

To find the diameter you can approximate the shape of the hole to a circle.

Tha area of a circle is π(r^2)

Then, area in 2009 = 24.1 * 10^6 km^2 => (r^2) = 24.1*10^6 km^2 / π = 7.67 * 10^6 km^2 => r = 2.77*10^3 km => diameter = 5.54*10^3 km 

Area in 2006 = 29.6*10^6 km^2 => (r^2) = 29.6*10^6 km^2 / π = 9.42*10^6 km^2 => r = 3.07*10^3 km => diameter =  6.14*10^3 km

Difference in diameters: 6.14 * 10^3 km - 5.54 * 10^3 km = 0.6 km = 600m

600 m

Idid the calculation and i get 875,000,000 which can be written as 8.75 x 10^6?