Please help!

the circumference of a crater is 210m. what is the radius

The lengths of nails produced in a factory are normally distributed with a mean of 4.91 centimeters and a standard deviation of 0.05 centimeters. find the two lengths that separate the top 4% and the bottom 4%. these lengths could serve as limits used to identify which nails should be rejected. round your answer to the nearest hundredth, if necessary.

If sr is 4.5cm and tr is 3cm, what is the measure in degrees of angle s?

The weight of an object in the water is 7% of its weight out of the water. what is the weight of a 652g object in the water?