At a charitable gambling event, a player pays $2 to spin the dial. the player gets back whatever dollar amount the dial lands on. which computation gives the probability that a player will not win $5? A. 1-1/2
B. 1-5/8
C. 1-3/8
D. 1-5/7

you have 6 cupcakes

geometry: triangles

solvers

lessons

answers archive

call the larger triangle abc

then the smaller triangle cde is similar to abc (all angles are equal, aaa).  

ab is the side that is 36, and we wish to find de, the side corresponding to ab

area_cde = area_abc - area_cde --> area_abc / area_cde = 2

let x=length of de

ratio of areas = (ratio of sides)^2

+2+=+%2836%2fx%29%5e2+

+2+=+1296%2fx%5e2+

++x%5e2+=+1296%2f2+=+648+

25.45584

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