Round Objects:
For round objects like circles, spheres, cones, cylinders, etc. are neither polygons nor polyhedrons. They can be used in everyday life like people cans to store food, or people throw balls in baseball. Many mathematicians find the area of round shapes such as finding the circumference of a circle using π (3.14). π is the most famous irrational number (or symbol) ever used in math. The formula for the circumference is 2πr or πd. For example: if a circle has a radius of 5cm, you plug in 5 as ‘r’ and then multiply the other two numbers. Then, the answer gives you 31.4cm2!
For round objects like circles, spheres, cones, cylinders, etc. are neither polygons nor polyhedrons. They can be used in everyday life like people cans to store food, or people throw balls in baseball. Many mathematicians find the area of round shapes such as finding the circumference of a circle using π (3.14). π is the most famous irrational number (or symbol) ever used in math. The formula for the circumference is 2πr or πd. For example: if a circle has a radius of 5cm, you plug in 5 as ‘r’ and then multiply the other two numbers. Then, the answer gives you 31.4cm2!
This is an illustration of a torus.