Question

How many tiles whose length and breadth are 12 cm and 5 cm respectively will be
needed to fit in a rectangular region whose length and breadth are respectively:
(a) 100 cm and 144 cm
(b) 70 cm and 36 cm.

Answer 1

a]  Area of tile = 12x5 = 60 cm^2      Area of region = 100x144 = 14400 cm^2      Tiles required = 14400/60 = 240 tiles. b] Area of tile = 12x5 = 60 cm^2     Area of region = 70x36 = 2520 cm^2     Tiles required = 2520/60 = 42 tiles.

Answer 2

Answer:

(a) 240

(b) 42

Step-by-step explanation:

The tiles having length and breadth 12 cm and 5 cm respectively will have area = (12×5) =60 cm²

(a) The area of a rectangular region having 100 cm length and 144 cm breadth will be = (100×144) =14400 cm².

Hence, to fit the tiles in this region (14400/60) =240 numbers of tiles will be needed. (Answer)

(b) The rectangular region having 70 cm length and 36 cm breadth will have area = (70×36) =2520 cm².

Hence, to fit the tiles in this region (2520/60) =42 numbers of tiles will be needed. (Answer)