A circle and its sides

Mathematics defines a circle as a round plane figure whose boundary comprises of points at equal distance from a fixed point. Its boundary makes its circumference and the fixed point is the centre. There have been arguments that a circle is actually a polygon consisting of infinite number of sides. Geometrically, a polygon is a closed plane figure having three or more sides that are all straight. A polygon will therefore definitely have ‘corners’. From this perspective, a circle cannot be a polygon as it has no identifiable corners.

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The amount of energy released by a hurricane

An average hurricane bringing in 1.5 cm per day of rain, with a circle radius of 665 km, generates a huge amount of energy (6.0 × 1014 Watts or 5.2 × 1019 Joules/ day),  which  is  equivalent of  200  times  the  electricity-generating capacity of the entire planet in a year. This is equivalent to detonating a ten megaton nuclear bomb every 20 minutes. In 10 minutes a hurricane releases more energy than all of the world’s nuclear weapons combined.

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