The ratio of the diameters of two circles is 3: 5. the circumference of the larger circle is approximately 113.1 m. what is the approximate circumference of the smaller circle?

3. find the radius of circle p.4. find y.

Pls will give brainliest and all p.s u can zoom in if u cant see plss

Researchers were interested in whether relaxation training decreases the number of headaches a person experiences. they randomly assigned 20 participants to a control group or a relaxation training group and noted the change in number of headaches each group reported from the week before training to the week after training. which statistical analysis should be performed to answer the researchers' question?