Question

what is the circumference of a circle with a diameter of 21 cm? use 3.14 for pi and enter your solution to the hundredths place position with no label.

Explanation:

Step1: Recall the formula for circumference

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

Step2: Substitute the given values

Given \(d = 21\) cm and \(\pi=3.14\), we substitute into the formula: \(C=3.14\times21\).

Step3: Calculate the product

\(3.14\times21=(3 + 0.14)\times21=3\times21+0.14\times21 = 63+2.94=65.94\)

Answer:

65.94