A square will have the same length and width and area= length times width. its set up in a 4x4 square because there are 16 squares total; 4 across and 4 down. if the sides are 4 miles each then one whole side will be 16 miles. so the equation is 16 times 16 which equals 256. so the answer is 256 square miles.
11/12 hours left. 1 2/3 - 3/4 = 11/12. First, find the common denominator (12) . The problem is now 1 8/12 - 9/12. Use the 1 in (1 8/12) to borrow. Multiply the denominator by 1 (12) and add that to the numerator. The question is now 20/12 - 9/12. I assume that you can finish it off from there.
Add 2
3p = -3
Divide by 3
p = -1
One line of symmetry an isosceles trapezoid has