Derivation of Pi Manufacturer,Supplier and Exporter in India
Product Code : EL-C-3653
Jlab Export is a leading Derivation of Pi Manufacturer,and suppliers in India
Derivation of Pi (code EL-C-3653) is a foam maths lab manipulative that demonstrates that the area of a circle is equal to the area of a rectangle. Its 28 cm diameter circle is cut into 16 equal parts and has a magnet at the back for demonstration on a magnetic board. It is made by Jain Laboratory Instruments Pvt Ltd (JLab) at its works in Ambala, India.
Specifications
| Parameter | Detail |
|---|---|
| Material | Foam |
| Circle diameter | 28 cm |
| Division | Cut into 16 equal parts |
| Backing | Magnet at the back, for demonstration on a magnetic board |
| Demonstrates | The area of a circle is equal to the area of a rectangle |
| Quality check | Each item is visually inspected before dispatch |
| Pack quantity | Each (sold individually) |
| Minimum order quantity | 10 units |
| Dispatch time | Usually 7–10 working days |
| Product code | EL-C-3653 |
| Manufacturer | Jain Laboratory Instruments Pvt Ltd (JLab) — OEM |
| Country of origin | India (made in Ambala, Haryana) |
What Is the Derivation of Pi Used For?
It shows where the formula for the area of a circle comes from. The 16 equal parts are laid in a row, alternately pointing up and down, to form a figure that is very nearly a rectangle. One long side of that figure is made of half the circle’s edge, which is half the circumference or πr, and its height is one radius, r — so the area of the circle equals πr × r, or πr². Shown on a magnetic board, the change from circle to rectangle happens in front of the whole class, which helps the formula stick. The demonstration belongs to the area-of-a-circle work in middle-school mensuration and to school maths lab activities.
What to Specify When Ordering
- Quantity — for example one for each maths classroom or maths lab.
- Magnetic board — the Magnetic Whiteboard is a separate item that can be quoted on the same enquiry.
Frequently Asked Questions
What does the Derivation of Pi demonstrate?
That the area of a circle is equal to the area of a rectangle: rearranged, the 16 equal parts of the circle form a near-rectangle with sides of half the circumference and the radius, giving the formula πr².
What is it made of, and how large is it?
It is made of foam, with a magnet at the back. The circle is 28 cm in diameter and is cut into 16 equal parts.
What should an export enquiry include?
The quantity, the destination country and port or city, the delivery terms you prefer (for example FOB or CIF), packing or labelling needs and any tender reference.
Who manufactures it?
Jain Laboratory Instruments Pvt Ltd (JLab) makes it at its works in Ambala, Haryana, India.
OEM Manufacturer
JLab is the trading name of Jain Laboratory Instruments Pvt Ltd, a maker of maths lab equipment and science teaching aids in India, incorporated in 2017 and based on Hargolal Road, Ambala, Haryana. The demonstration pieces are made at JLab’s own works rather than sourced from a trader, so schools, colleges, dealers and importers buy factory-direct; every item is visually inspected before dispatch, and repeat orders come from the same maker. JLab exports worldwide and ships to buyers in every region — for example Yemen in the Middle East, Bhutan in South Asia, the USA in North America, Egypt in North Africa and Indonesia in Southeast Asia. Tender information is on the JLab lab tenders page.
Related Circle Aids
- Circle Kit — three circular disks of different radii for the radius, diameter and circumference relationship.
- Magic Ring — a 25 cm plastic ring with holes for drawing circle theorems on a sheet or whiteboard.
- Circle Fraction (Magnetic) — magnetic circle fractions for classroom demonstrations of fraction operations.
- Magnetic Whiteboard — a separate write-on, wipe-off whiteboard with a magnetic surface in an aluminium frame.
See the complete Circle range and JLab’s Maths Lab Equipment.
Request a Quote
Send your enquiry with the Add To Cart button, or through the contact page with the quantity, the delivery destination and whether a magnetic board should be quoted too.
Last updated: 16 October 2026
