r2
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on the top right part of the number being squared and remember to make it smaller than the number being squared
Multiply the no. by itself. Ex 5 squared is 25.
its 2 pie r squared BUT you have to add back the base (a circle) which is pie r2 The original formula is 4 pie r squared Your new formula is (2 pie r squared + pie r squared)
That is the formula for the area of a circle; r refers to the radius, and pi is approximately 3.14. r squared means that you multiply r x r.
The squared symbol. (That's the little 2 next to the number.)