Use the value 3,142 for π. 1. Determine the perimeter of each shape. a) 4,5 cm 7,4 cm 2. Determine the perimeter of each shape: 21.5 km a) 4 km 7 km 11 km 7,5 km 12,8 km 12,5 mm 10 mm F 8,5 m 47 cm b) 20 cm 26 cm 5 cm 15 cm 10 cm 30 cm ​

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