how many tiles of size 20 cm by 15 cm are needed for a floor of size 15 m x 5 m?
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Solution:
Size of tiles = 20 x 15
= 20/100 x 15/100
Size of wall =15 x5
No. of tiles =area of wall / area of 1 tile
=15 x 5 / 20/100 x 15/100
= 15 x5x100x100/20x15
= 750000/300 (cancellation)
=2500
Therefore , the number of tiles needed for a floor of size 15 x5 are 2500
Size of tiles = 20 x 15
= 20/100 x 15/100
Size of wall =15 x5
No. of tiles =area of wall / area of 1 tile
=15 x 5 / 20/100 x 15/100
= 15 x5x100x100/20x15
= 750000/300 (cancellation)
=2500
Therefore , the number of tiles needed for a floor of size 15 x5 are 2500
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