Question

a circle has a diameter of 28 cm. what is its circumference? use 3.14 for π, and do not round your answer. be sure to include the correct unit in your answer.

Explanation:

Step1: Recall the formula for circumference

The formula for the circumference \(C\) of a circle is \(C = \pi d\), where \(d\) is the diameter.

Step2: Substitute the given values

Given \(d = 28\) cm and \(\pi=3.14\), substitute into the formula: \(C=3.14\times28\).

Step3: Calculate the product

\(3.14\times28=(3 + 0.14)\times28=3\times28+0.14\times28=84 + 3.92 = 87.92\).

Answer:

\(87.92\) cm