Area = L*W
Area = 14* (5x-3)
Area = 60x-42
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The surface area is L*B where L is the length of the rectangle and B is the breadth.
Any rectangle with a length and width that multiply together to equal 14. L=14 W=1, or L=7 W=2, or L=10, w=1.4 or L=5 w=2.8 etc
In order to find the area of a rectangle, you must follow the formula A= l x w where A is area, l is length, and w is width.
Let L be the length of the rectangle. Since the length of the side of the square is the same as the width of the rectangle and the width of the rectangle is its length minus 6, the length of the side of the square is (L-6) and the area is (L-6)2. Since the width of the rectangle is its length minus 6, its area is L(L-6). Here is some of the work: 176 = (L-6)2 + L(L-6) 176 = (L-6)(L-6) + L(L-6) 176 = L2 - 6L - 6L + 36 + L2 - 6L 176 = 2L2 - 18L + 36 140 = 2L2 - 18L 70 = L2 - 9L 70/L = L - 9 (9L + 70)/L = L L = (9L+70)/L L2 = (9L+70) L = sqrt(9L+70) According to WolframAlpha (www.wolframalpha.com), L=14. (But don't say L; use x). The length of the side of the square is 8 m, which is also the width of the rectangle; the length of the rectangle is 14 m; the area of the square is 64 m2; and the area of the rectangle is 112 m2.
Perimeter = 2*(Length + Width) So 36 = 2*(L+4) => 18=L+4 => L = 14 ft So area = Length * Width = 14*4 = 56 sq ft