Some Maths Facts
Perimeter of Circle = 2piR (pi=3.14, R= Radius)
Area of Circle = piR*R
Perimeter of Rectangle = 2(l+b) or 2l+2b (l = length, b = breadth)
Area of rectangle = l*b
Perimeter of square = 2a (a = one side)
area of square = a*a
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