the radius of a circle is increased by 1 % . find how much % does its area increases ?
r = 100 r = 101 r 2 = 10000 r 2 = 10201 10000 - - - - 201 100 - - - - ? = > 2.01 % answer : d
divide(add(multiply(const_2, const_100), 1), const_100)