June 15, 2021 3:56 pm
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1 Answer
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June 15, 2021 3:57 pm
Topic starter
Draw diagonal QS and notice that it is also a diameter of the circle. Each triangle formed is an isosceles (45-45-90) right triangle, so the sides of are in the ratio
The area of the square is 4, so each side of the square is 2, and the sides of
are 2, 2 and
(Multiply all numbers in the ratio
by 2 to get the ratio
So
and the radius is half that: