+26 The ceiling of Xavier’s living room is a square that is 12 ft long on each side. To decorate for a party, he plans to hang crepe paper around the perimeter of the ceiling and then from each corner to the opposite corner. Xavier can buy rolls that each contain 10 ft of crepe paper. What is the minimum number of rolls he should buy? Show all your work.
+2187
The ceiling of Xavier’s living room is a square that is 12 ft long on each side. To decorate for a party, he plans to hang crepe paper around the perimeter of the ceiling and then from each corner to the opposite corner. Xavier can buy rolls that each contain 10 ft of crepe paper. What is the minimum number of rolls he should buy? Show all your work.
Needed for perimeter = 4 • 12 = 48 ft
Needed for diagonals = 2 • 12 • sqrt(2) = 33.94 ft call it 34 ft
Total crepe paper needed = 48 + 34 = 82 ft
Xavier needs to buy 9 rolls of crepe paper to have enough.
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