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The perimeter of a rectangle with length of 10 miles and width of 5 miles is 30 miles.
2*3 = 6 square miles
809 miles wide, 847 miles long:)
Well, honey, to calculate the area in square miles, you multiply the length by the width in miles. So if you have a rectangle that is 10 miles long and 5 miles wide, you just do 10 x 5 to get 50 square miles. It's as simple as that, darling.
Let the length be (2x+1) and the width be x: length*width = area (2x+1)*x = 21 square miles 2x2+x-21 = 0 Solving the above quadratic equation works out as: x = -7/2 or x = 3 it must be the latter because dimensions can't be negative. Therefore: length = 7 miles and width = 3 miles