Question

the length of a rectangular floor is 20 m 16 cm and width 15 M 60 cm. It has to be fixed by putting the same square shaped tiles. find out at least how many tiles it needs.

Answer 1

17 but m not sure about its accuracy

Answer 2

20m 16cm = 2016 cm

15m 60cm = 1560 cm

2016 = 2⁵ x 3² x 7

1560 = 2³ x 3 x 5 x 13

HCF = 2³ x 3 = 24

The biggest square tile will be 24cm by 24cm

Number of tiles needed lengthwise = 2016 ÷ 24 = 84

Number of times needed breadthwise = 1056 ÷ 24 = 44

Total tiles needed = 84 x 44 = 3696

Answer: 3696 of the 24cm by 24cm tiles.