Finding area of any rectangular object is length × width. So, 4 × 9 = 36 is the area of the rectangular rug.
The area of a square is one side of the square times itself. So, side × side = area of square. Let's call the sides s. I'm going to substitute the formula for area of a square with s.
s × s = area of a square. We know that the area of the rectangle is the same as the area of the square. So, s × s = 36.
When you have the same side multiplied by itself, that's equivalent to that side to the second power. So, s × s = s^2 = 36. To get one side, we must take the square root of both sides: sqrt (s^2) = sqrt (36).
s = 6. One side of the square has a length of 6 feet. Good luck!
The best thing to do is to divide the amount she has driven (357.9) by the miles (21) As you're looking for an estimate, you have to round them. 357.9 rounds to 360 21 rounds to 20 Therefore, you've got to divide them 360/20= 18 Therefore, Ellen has driven approximately 18 miles Hope this helps :)
