Ariel weighed a mitten on her balance and recorded a mass of 2.3 grams. Her teacher told her that there was obviously something wrong with her balance because it was giving
. her a reading, which was actually 3 grams. What was the percent error of Ariel's
balance?

Show all of your work, and DON’T send those links or try to get points again. swear to god if you do.

answer:      

step-by-step explanation:

geometry: triangles

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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