Which set of measures could NOT be the side lengths of a right triangle? Select one:

18 cm, 24 cm, 30 cm

10 cm, 20 cm, 30 cm

30 cm, 40 cm, 50 cm

30 cm, 72 cm, 78 cm

answer: the first one

step-by-step explanation: use a calculator and divide the minutes by the dollars.

geometry: triangles

solvers

lessons

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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

step-by-step explanation:

the true ones are a b and d