On a certain planet, Continent X has area 7.75×10^7 square miles and Continent Y has area 7.12×10^7. Which continent is larger? By how many square miles is its area greater?
To determine which continent is larger, we compare the areas of Continent X and Continent Y.
Continent X: 7.75×10^7 square miles
Continent Y: 7.12×10^7 square miles
Comparing the two, we see that Continent X is larger than Continent Y because 7.75×10^7 is greater than 7.12×10^7.
To find by how many square miles Continent X's area is greater, we subtract the area of Continent Y from the area of Continent X:
(7.75×10^7) - (7.12×10^7) = 0.63×10^7
Therefore, the area of Continent X is greater by 0.63×10^7 square miles.