Question

calculate the circumference.
formula:
c = 2πr
use 3.14 for π.
c = ? cm
round to the nearest tenth.

Explanation:

Step1: Substitute the values into the formula

Given \( r = 12\) cm and \(\pi=3.14\), substitute into \(C = 2\pi r\).
\(C=2\times3.14\times12\)

Step2: Perform the multiplication

First, \(2\times3.14 = 6.28\). Then \(6.28\times12=75.36\)

Answer:

\(75.4\) cm (rounded to the nearest tenth)