Since by definition, a rectangle has two pairs of equal length sides, (2 * 7) + (2 * 45) will get the perimeter: 104.
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width = (x + 4) cm length = [(x + 4) + (x + 7)] cm Rectangle Perimeter = 2[(x + 4) + (x + 4 + x + 7)] cm Rectangle Perimeter = 2[(x + x + x) + (4 + 4 + 7)] cm Rectangle Perimeter = 2(3x + 15) cm Rectangle Perimeter = (6x + 30) cm
The perimeter is the distance around, the sum of the sides. A 5 x 7 or a 4 x 8 rectangle has a perimeter of 24.
56
A rectangle 10.5 x 3 will have a perimeter of 27 in.
It is a 3 x 15 rectangle !