In the middle of a 55 meter long and 45 meter wide rectangular green space, two vertical paths of the same width will be built. The remaining area that can be used for greening is 2000 thousand square meters Find the width of the path It's 2000 square meters
The area of rectangular green space is 55 * 45 = 2475 m2; 2475-2000 = 475 M2 is the area of path; let the width of path be x; 45x + 55x-x ^ 2 = 475; use the formula x = [- B ± √ (b ^ 2-4ac)] / 2a to get x = 5
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