- Thread starter ColbLay
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This post makes the previous post false. And the Circumference?The area inside the whole circle is 25pi

After that, you'll need the proportions.

Okay, you will also know the angle measure of P{Center}Q

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If the sector was half of the circle, then you would say its area is (1/2)(25pi). If the sector was (1/4) of the circle then the area of the sector would be (1/4)(25pi). Well what part of the circle is sector PQ?

Find the circumference of the entire circle. What part of the circumference do you want??