9 cm times 6 times 3.5

189cm

Step-by-step explanation:

9 times 6 =54,

54 times 3.5 =189

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

happy to

pls mark as brainliest

12

step-by-step explanation:

12 + 5 = 17

12x2=24

24-7=17