Iam a number. i am the square root of the number of squares on a chess board or a checker board. what number am i?

Hurry and answer this! circle x with a radius of 6 units and circle y with a radius of 2 units are shown which steps would prove the circles similar? translate the circles so they share a common center point, and dilate circle y by a scale factor of 4. translate the circles so the center of one circle rests on the edge of the other circle, and dilate circle y by a scale factor of 4. translate the circles so they share a common center point, and dilate circle y by a scale factor of 3. translate the circles so the center of one circle rests on the edge of the other circle, and dilate circle y by a scale factor of 3

Are the corresponding angles congruent? explain why or why not.

When i'm with my factor 5, my prodect is 20 .when i'm with my addend 6' my sum is 10.what number am i