GMAT Problem Solving (PS) | Re: Marty's Pizza Shop guarantees that their pizzas all have a

There is nothing wrong with thisapproach.

\frac{\pi (8-x)^2}{\pi(8)^2} = \frac{3}{4} -->(8-x)^2=48 -->8-x=4\sqrt{3}=6.9 -->x=8-6.9=1.1 .
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