Step-by-step explanation:
Length of the hall's floor= 30m
Breath of the hall' floor= 9.5m
Area of the floor= ( 30×9.5 ) Square metres
= 285 square metres
Side of the square tiles= ½m =0.5 m
Area of the square tile= ( 0.5× 0.5 ) Square metres
= 0.25 Square metres
No. of square tiles required for flooring the hall= 285 ÷ 0.25 = 1140
Therefore, 1140 tiles are required.
Hope it helps you!