Acircle has a circumference of 59 cm

using 3.14 as an approximation for π, what is the approximate value for the radius of of the circle

a 4.7 cm
b 9.4 cm
c 18.8 cm
d 37.6 cm

B 9,4 cm

Step-by-step explanation:

The circumference of a circle is:

2πR

We know that the circumference of this circle is 59 cm, therefore, we can calculate your radio:

2πR = 59

2(3,14)R = 59

6,28 R = 59

R = 59/6,28

R = 9,394

R ≈ 9,4

d. 24+-0.114

step-by-step explanation:

the question requires us to calculate the approximate 95% confidence interval for the mean number of ounces of ketchup per bottle in the sample given the following statistics;

sample mean = 24

standard deviation, σ = 0.4

sample size , n = 49

the confidence interval for a population mean is calculated using the formula;

sample mean ± z-score*(σ/sqrt(n))

the z-score associated with a 95% confidence interval, from the standard normal tables, is;

1.96

substituting these values into the formula;

24 ± 1.96*(0.4/7)

= 24 ± 0.112

from the alternatives given, choice d is closest to the above expression;