First, convert those inches to feet. 7in =ish 0.5833333 (you find this by dividing 7/12 on a calculator) Now you just square 9.583333333 9.583333333^2 9.583333333 * 9.583333333 91.84027777ish Rounded to the nearest foot, means the answer is 92ft.
Let y = the length of the 3rd side x+3 + 2x+4 + y = 6x x + 2x + 3 + 4 + y = 6x 3x + 7 +y = 6x 7 + y = 3x y = 3x - 7 The length of the third side in terms of x is 3x-7
