Question

My math teacher randomly assigned this but it’s something far outta my range, I need some help!!!!!

Answer 1

If d=26 then r = d/2 = 13

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Answer 2

If d=26 and c=26pi, then the only variable you can find is r. To find r, know that r=d/2.
Now we can figure out that…
r=d/2
r=26/2
r=13
This means the answer is “then r=13”