Title: वैकल्पिक

Text: A Greek mathematician and inventor, Archimedes invented a spiral pump for raising water. The pump, called an Archimedian screw is still used. He discovered differential calculus and the formula for the volume of a sphere. He is best known for his work on the principles of buoyancy, which he is alleged to have discovered when sitting in a bath and noticing how his body displaced the water. He was killed by a Roman soldier during an invasion of his home city of Syracuse. प्रत्येक पराग्राफले परीक्षण हुनेछ।

Save test: यदि तपाईं यो टाइपिङ परीक्षणलाई साझा गर्न चाहानुहुन्छ भने यो प्रयोग गर्नुहोस् (केवल प्रमाणीकृत प्रयोगकर्ताहरूको लागि)।