1 Answer

Uliwitness · Answer 1 · 2019-09-28T15:45:03+0000

Since 90/360 is 1/4, the length of the arc is 1/4 the circle's circumference.

The circumference is (2+2)pi, or 4pi.

1/4 of that is pi.

So, the answer is pi.

Hope this helps!

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