Mathematics, 21.09.2020 23:01, loroloco71

Sarah painted a chalkboard on her wall using chalkboard paint. The chalkboard is 137 centimeters tall and 170 centimeters wide. She wants to put a border around it. About how long will the border need to be to go all the way around the chalkboard?

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Sarah painted a chalkboard on her wall using chalkboard paint. The chalkboard is 137 centimeters tal...