Me right 40 pts. the ceiling of katie’s living room is a square that is 12 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. katie can buy rolls that each contain 10 ft of crepe paper. what is the minimum number of rolls she should buy? show your work. show work .

CREDIT BELONGS TO Sage24

I think that 3 rolls is wrong and that 6 rolls is right. If you create a 15 by 15 square and draw two lines through the center that connect to the opposite corner, you'll be able to use the Pythagorean Theorem.

Perimeter: 15+15+15+15=60ft.

Length of Line from Corner to Corner:

(15)(15)+(15)(15)=C^2

225+225=C^2

450=C^2

21.2=C

21.2(2)= 42.4ft.

42.4ft.+60ft.= 102.4ft.

102.4ft. divided by 20ft. = 5.12 = 6 rolls

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x= 149. 24+7=31. 180-31=149

your welcome

in problems involving proportions, we can use cross products to test whether two ratios are equal and form a proportion. to find the cross products of a proportion, we multiply the outer terms, called the extremes, and the middle terms, called the means.

hope it