1.Ancient Egyptians used math to figure out how big is a circle. They found different ways of measuring circle.
2. Did you know that circumference is almost 3 times as much as the diameter.
3.The Indians made numbers in the sixteenth century.
4. The = sign was invented 1557.
2. Did you know that circumference is almost 3 times as much as the diameter.
3.The Indians made numbers in the sixteenth century.
4. The = sign was invented 1557.