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.

Explanation

To solve the problem of how many tiles are needed to fit in the given rectangular regions, we will follow these steps:

### Step 1: Calculate the area of the tiles.
The area of one tile can be calculated using the formula:
\[ \text{Area of tile} = \text{Length} \times \text{Breadth} \]
Given the dimensions of the tile are 12 cm (length) and 5 cm (breadth):
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