Question 26
If the calculated answer is not an integer, give the nearest integer. If the calculated answer has more than five digits, give its last five digits.
$ABCD$ is a square. Its circumscribed circle has radius $R$ and its inscribed circle has radius $r$. Find $\dfrac{R^2+r^2}{r^2}$.
$ABCD$ is a square. Its circumscribed circle has radius $R$ and its inscribed circle has radius $r$. Find $\dfrac{R^2+r^2}{r^2}$.