Answer:
Radius of circle is given as 22.39 cm
Explanation:
Given data:
GHIJ is rectangle which is inscribe in a circle such that prependicular lie on one side of traingle form by joining the diagnol of rectangle is 6 cm
and angle is given as 15 degree as shown in figure given below
we know that

so we have


tan 15 = 0.267 {from calculator}
so we have
x = 22.39 cm
hence the radius of circle is given as 22.39 cm