Does someone know how to solve this but in this type of way

Area of the shaded region = 24 m²

Area of the polygon = 160 ft²

Solution:

Question 1:

Length of the rectangle = 8 m

Width of the rectangle = 4 m

Area of the rectangle = length × width

                                    = 8 × 4

                                    = 32 m²

Area of the rectangle = 32 m²

Side length of the square = 2 m

Area of the square = side × side

                                = 2 × 2

                                = 4 m²

Area of the square = 4 m²

Area of 2 squares = 2 × 4 = 8 m²

Area of the shaded region = Area of the rectangle – Area of 2 squares

                                             = 32 m² – 8 m²

                                             = 24 m²

Area of the shaded region = 24 m²

Question 2:

Area of the rectangle = 14 × 12 = 168 ft²

Area of the one square (corner) = 2 × 2 = 4 ft²

Area of the 2 squares (corner) = 2 × 4 = 8 ft²

Area of the polygon = Area of the rectangle – Area of 2 squares

                                  = 168 ft² – 8 ft²

                                  = 160 ft²

Area of the polygon = 160 ft²

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

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