A block of cheese has a volume of 223 cm3 and a mass of 175 g. What is the density of the cheese in g/cm3 rounded to 2 decimal places?

0.79 g/cm³

Step-by-step explanation:

175 g/223 cm³ = 0.79 g/cm³

0.78 g/cm³

Step-by-step explanation:

Density = mass ÷ volume

=175g ÷ 223cm³

=0.7847533632(2dp)

=0.78g/cm³

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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