A squash ball weighs 34000 mg, a cricket ball weighs 45g, a basketball weighs 0.65 kg and a football weighs 3 kg.
Which of the given sports ball is lightest in weight?

Options

A. Cricket ball
B. Football
C. Squash ball
D. Basketball

Answer

To determine which sports ball is the lightest in weight, we need to convert all the weights into the same unit. Let's convert everything into grams (g) for easier comparison.

### Step-by-Step Solution:

1. **Convert the weight of the squash ball from milligrams to grams:**
- The weight of the squash ball is given as 34,000 mg.
- We know that 1,000 mg = 1 g.
- Therefore, to convert milligrams to grams, we divide by 1,000:
\[ \text{Weight of squash ball in grams} = \frac{34000 \text{ mg}}{1000} = 34 \text{ g} \]

2. **Identify the weight of the cricket ball:**
- The weight of the cricket ball is already given as 45 g.

3. **Convert the weight of the basketball from kilograms to grams:**
- The weight of the basketball is given as 0.65 kg.
- We know that 1 kg = 1,000 g.
- Therefore, to convert kilograms to grams, we multiply by 1,000:
\[ \text{Weight of basketball in grams} = 0.65 \text{ kg} \times 1000 = 650 \text{ g} \]

4. **Convert the weight of the football from kilograms to grams:**
- The weight of the football is given as 3 kg.
- Using the conversion of kilograms to grams:
\[ \text{Weight of football in grams} = 3 \text{ kg} \times 1000 = 3000 \text{ g} \]

5. **Compare all the weights:**
- Squash ball: 34 g
- Cricket ball: 45 g
- Basketball: 650 g
- Football: 3000 g

6. **Determine the lightest ball:**
- From the weights we calculated, the lightest ball is the squash ball at 34 g.

### Conclusion:
Hence, the lightest sports ball is the **squash ball**.

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