Question

the formula to find the circumference of a circle is $c = 2\pi r$. use 3.14 for $\pi$. what is the approximate circumference of the circle? a. 6.3 in. b. 9.1 in. c. 12.6 in. d. 25 in. e. 50.2 in.

Explanation:

Step1: Substitute the values into the formula

Given \(r = 4\) in and \(\pi=3.14\), substitute into \(C = 2\pi r\).
\(C=2\times3.14\times4\)

Step2: Calculate the result

First, \(2\times4 = 8\), then \(8\times3.14=25.12\approx25\) (rounded to the nearest whole number)

Answer:

D. 25 in.