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, we need to determine how many tiles of dimensions 12 cm by 5 cm are required to cover two different rectangular regions. We will follow these steps:

### Step 1: Calculate the area of one tile.
The area of a rectangle is calculated using the formula:
\[ \text{Area} = \text{Length} \times \text{Breadth} \]

For one tile:
- Length = 12 cm
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