A 2 row seed drill is used for sowing pinto seeds at the rate of 125kg/ha. The distance between 2 rows is 20cm and the diameter of the planter wheel is 45cm . How much seeds will be dropped in 65 rotations

To calculate how much seed will be dropped in 65 rotations, let's break down the problem into steps:

### Step 1: Calculate the distance covered in one rotation of the planter wheel.
- The diameter of the wheel is 45 cm, so the circumference \( C \) (distance covered in one complete rotation) can be calculated using the formula for the circumference of a circle:
\[
C = \pi \times d = \pi \times 45 \, \text{cm}
\]
\[
C \approx 3.1416 \times 45 = 141.37 \, \text{cm} = 1.4137 \, \text{m}
\]
So, in one rotation, the planter wheel covers approximately 1.4137 meters.

### Step 2: Calculate the total distance covered in 65 rotations.
\[
\text{Total Distance} = 65 \times 1.4137 \, \text{m} = 91.89 \, \text{m}
\]

### Step 3: Calculate the area covered by the seed drill.
- The seed drill has 2 rows, and the distance between them is 20 cm (or 0.2 meters). Therefore, the width covered by the drill in one pass is:
\[
\text{Width} = 2 \times 0.2 = 0.4 \, \text{m}
\]
- The area covered by the drill over the total distance is:
\[
\text{Area} = \text{Total Distance} \times \text{Width} = 91.89 \, \text{m} \times 0.4 \, \text{m} = 36.756 \, \text{m}^2
\]

### Step 4: Calculate the amount of seeds dropped.
- The seed rate is given as 125 kg per hectare. Since 1 hectare equals 10,000 square meters, the seed rate per square meter is:
\[
\text{Seed rate per square meter} = \frac{125 \, \text{kg}}{10,000 \, \text{m}^2} = 0.0125 \, \text{kg/m}^2
\]
- The total amount of seeds dropped is:
\[
\text{Seeds dropped} = \text{Area} \times \text{Seed rate per square meter} = 36.756 \, \text{m}^2 \times 0.0125 \, \text{kg/m}^2 = 0.45945 \, \text{kg}
\]
Thus, the amount of seeds dropped in 65 rotations is approximately **0.46 kg**.

Would you like more details on any step or have any further questions?

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Here are 5 related questions you might find helpful:
1. How do different seed rates affect plant growth density in a given area?
2. What is the importance of row spacing in crop yields?
3. How can planter wheel diameters impact seed sowing efficiency?
4. How does the speed of the tractor affect seed distribution?
5. What are the benefits of using precision seed drills for agriculture?

**Tip:** Always make sure to calibrate your seed drill before starting to ensure that it is distributing seeds evenly at the desired rate.

A 2 row seed drill is used for sowing pinto seeds at the rate of 125kg/ha. The distance between 2 rows is 20cm and the diameter of the planter wheel is 45cm. How much seeds will be dropped in 65 rotations?

Calculate how much seed is dropped by a 2-row seed drill with a 45cm diameter wheel, sowing at 125kg/ha, over 65 rotations. This solution involves geometry (circumference and area) and unit conversions, making it suitable for students in Grades 9-12.

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