The ceiling of Katie’s living room is a square that is 25 ft long on each side. To decorate for a party, she plans to hang crepe paper around the perimeter of the ceiling and then from each corner to the opposite corner. (just 2 diagonals) Katie can buy rolls that each contain 30 ft of crepe paper. What is the minimum number of rolls she should buy? (assume the crepe paper is hung flush with the wall and ceiling)

25^2 + 25^2 = c^2 625 + 625 = c^2 c^2 = 1250 c = 35.4

25 + 25 + 25 + 25 + 35.4 + 35.4 = 170.8 (round up to 180) 180 / 30 = 6 rolls

The minimum number of rolls she should buy is 6 rolls

Step-by-step explanation:

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so a parallelogram is just like a square base times height. multiply 40 and 39 to get 1560 inches.

a triangle is base times height divided by two. so multiply 7.9 and 5 and then divide it by 2 to get 19.75inches.

the kite can be split into two separate triangles and added together to get the total area. 30 x 4 /2 which equals 60. make sure to double it for the two triangles making 120.