2(21+12) = 66 feet
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21ft
Perimeter of rectangle: 5+3+5+3 = 16cm
Perimeter of rectangle: 24+17+24+17 = 82 meters
Perimeter of rectangle = (length * 2) + (height * 2 Perimeter = (50.7 * 2) + (40.8 * 2) Perimeter = 183cm
16cm.