On a certain planet, continent X has 7.82×10⁷ square miles and content Y has area 6.91×10⁷ square miles. Which continent is larger? By how much square miles is its area greater? Using scientific notation.

To determine which continent is larger, we compare the areas of continent X and continent Y.

Area of continent X = 7.82×10⁷ square miles
Area of continent Y = 6.91×10⁷ square miles

We can see that the area of continent X is larger than the area of continent Y.

To find out by how much square miles continent X is greater than continent Y, we subtract the area of continent Y from the area of continent X:

(7.82×10⁷) - (6.91×10⁷) = 0.91×10⁷

Therefore, continent X is larger than continent Y by 0.91×10⁷ square miles.