SOLUTION: A=π(d/2)^2 solve for d the answers I have come up with are : πd^2/4 or d = √π/4

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Question 777709: A=π(d/2)^2 solve for d
the answers I have come up with are : πd^2/4 or d = √π/4
Answer by josgarithmetic(39617) About Me  (Show Source):
You can put this solution on YOUR website!
Solve for d in A=pi%28d%2F2%29%5E2.

Multiply both members by pi%5E-1.
A%2Fpi=%28d%2F2%29%5E2
Raise both members to (1/2) power.
sqrt%28A%2Fpi%29=d%2F2

Multiply both members by 2.
highlight%282%2Asqrt%28A%2Fpi%29%29=d

The square root of the already-irrational pi, could use further simplification from being in a denominator position:

Not certain if this is really simpler or not.