Work out length of ea in the diagram

By applying the theorem of similar triangles and their side ratio, the length of EA is approximately: 16.7 cm

Triangle CDB and triangle CEA are similar triangles.

Based on the theorem of similar triangles, the ratio of the side lengths of triangle CDB to the corresponding side lengths of triangle CEA would be equal.

Given:

EA/DB = CE/CD

EA = 16.6 cm

Therefore, by applying the theorem of similar triangles and their side ratio, the length of EA is approximately: 16.7 cm

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DB : EA = DC : EC

10 : x = 9 : (9 + 6)

10 : x = 9 : 15

x = (10 * 15) : 9

x = 150 : 9

x = 16.66

16.66 cm is your answer

percentage - 25%

probability - 0.25

we know,

total amount of students in class = 20

total boys = 10

total girls = 10

no of girls who wear glasses = 10/2 = 5

probability of choosing a girl with glasses is =

number of girls wearing glasses/total number of students in the class = 5/20

thus, percentage of selecting a girl wearing glasses will be

= 5/20 × 100

= 5 × 5

25%

therefore,

probability will be 0.25

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