Areas of two circles have ratio . What is the ratio of their radii?
(E) None of the above
Let area of the first circle
Let area of the second circle
Let radius of first circle
Let radius of second circle
It is given that
Taking square root on both sides, we get
Hence, the answer is (A).
We can directly find ratio of the radii of two circles if ratio of their areas is given to us.
Ratio of their radii where A1 is the area of the first circle and A2 is the area of the second circle.