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Area of Fig 1 = 3 unit x 3 unit = 9 units2

Area of black tile = (2 unit x 2 unit) + (1unit x 1 unit) = 5 unit2.

a) Fraction of Fig 1 make up of black tile will be 5/9.

b) Total area of the floor in black tile will be,

5/9 x 18 m x 18 m = 180 m2

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thank you

 

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