Rasheed got a playing top (lattu) as his birthday present, which surprisingly had no colour on it. He wanted to colour it with his crayons. The top is shaped like a cone surmounted by a hemisphere. The entire top is 5 cm in height and the diameter of the top is 3.5 cm. Find the area he has to colour.

Explanation

To solve the problem of finding the area Rasheed has to color on his playing top (lattu), which is shaped like a cone surmounted by a hemisphere, we will follow these steps:

### Step 1: Understand the dimensions
- The total height of the top (lattu) is given as 5 cm.
- The diameter of the top is given as 3.5 cm, so the radius (r) is half of the diameter:
\[ r = \frac{3.5 \text{ cm}}{2} = 1.75 \text{ cm} \]
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