5: A training field is formed by joining a rectangle and two semicircles, as shown below. The rectangle is 89m long and 53m wide. What is the length of a training track running around a field? (use the value 3.14 for pie and do not round your answer)

Need on this geometry question. explain how you did it.

Pleas ! its urgent! what is the value of x? enter your answer in the box. mm

Arandom sample of n = 25 observations is taken from a n(µ, σ ) population. a 95% confidence interval for µ was calculated to be (42.16, 57.84). the researcher feels that this interval is too wide. you want to reduce the interval to a width at most 12 units. a) for a confidence level of 95%, calculate the smallest sample size needed. b) for a sample size fixed at n = 25, calculate the largest confidence level 100(1 − α)% needed.