Electro-Mechanical Computers were used before first generation of computers.
No, the value of pi was not first calculated by Budhayana. It is debated who the first person was to calculate it. However, it is believed that Archimedes was the first to calculate it using polygons, while Ptolemy was the first to assigned it its current value directly.
before electronic computers there were human computers (i.e. humans doing calculations with pencil and paper, if they were lucky a mechanical desk calculator and a book of precalculated mathematical tables).
Archimedes made a variety of advances including volume and buoyancy measurements along with mathematics that define the size of a cylinder using a sphere. He also helped to make a lever more useful in farming.
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An approximation of pi is 3.14159568. It is a non-repeating decimal, and many powerful computers have calculated trillions of decimal places, so the known number is too large for this space.
Just like they are now, with dials.
He calculated 100 places of pi.
An INFINITE number. Computers have calculated 'pi' to billions of places and still going. However for everyday school learning pi = 3.14 or pi = 22/7 . For more accurate calculations pi = 3.1416 . This is used in science, technology and engineering.
The Egyptians calculated pi to be 3.16.
Aryabhatta.
Pi day falls on the 14th of march every year, and is celebrated by people Worldwide. Since March is the the third month of the year this means, it's the 14/3 i.e the three most recognised digits of pi. Interestingly, with the aid of computers, pi has been calculated to over a trillion decimal places.
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aryabhatta.
The circumference of a circle can be calculated by multiplying pi by the diameter of the circle. For example if the diameter is 10 then the calculation will be pi x 10 = answer. The most commonly used value for pi is 3.14