Aballroom in a hotel has the shape shown in the diagram. the hotel manager needs to determine how much carpet is needed to recarpet this area. all angles are right angles. the area of the ballroom is

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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80 the answer is 80

step-by-step explanation: