How to calculate square/cubic root by hand?

Today, technologies make everything easy and fast. And sometimes, when we see the ancient marvels of engineering, we wonder: “How they designed this without computers”? And the answer is: “with knowledge, inspiration and hard work”. However, being almost irreplaceable, computers makes us more and more adjective. Our brains become lazy and we are losing someContinue reading “How to calculate square/cubic root by hand?”