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Area of rectangular table = 90 x 70 Area of square blocks=10 x 10 Number of blocks=Area of rectangular table/Rea of square=90 x 70/10 x 10=63 Therefore, 63 blocks will be required

Find area of square = a^2=10^2 find area of rectangle = lambi* unchi that is : 90*70 t0 get number of sq block ,area of rectangle should be divided by area of square 90*70/10*10 answer :63