Question

using the formula c = 2πr, what is the circumference of a circle with radius r = 7? (use π ≈ 3.14)

Explanation:

Step1: Substitute the values into the formula

Given \(C = 2\pi r\), \(r = 7\), \(\pi\approx3.14\). Substitute \(r\) and \(\pi\) into the formula: \(C=2\times3.14\times7\).

Step2: Calculate the result

First, \(2\times7 = 14\), then \(14\times3.14=43.96\).

Answer:

43.96