Which is a recursive formula for the sequence 99.4, 0, –99.4, –198.8, where f(1) = 99.4?
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The formule is about area of a circle.
We need to solve the equation for x. Where x is the radius of the circle.
In order to solve it for x, we need isolate it for x on left side.
So, first we need to get rid pi from left side.
On dividing both sides by pi, we get
Taking square root on both sides, we get