The circumference of a circular pond in the park is 120 meters. Find the area.
The formula for circumference is C = d.
What is the value of the diameter rounded to the nearest whole number? 38 m
What is the value of the radius rounded to the nearest whole number? 19 m
The formula for area is A= .
What is the approximate area of the circular pond rounded to the nearest whole number?

In a survey of 1015 adults, a polling agency asked, "when you retire, do you think you will have enough money to live comfortably or not. of the 1015 surveyed, 534 stated that they were worried about having enough money to live comfortably in retirement. construct a 90% confidence interval for the proportion of adults who are worried about having enough money to live comfortably in retirement.