Question

question
the radius of a circle is 1.1 cm. find the circumference to the nearest tenth.
answer attempt 1 out of 2
c = cm submit answer

Explanation:

Step1: Recall the formula for the circumference of a circle

The formula for the circumference of a circle is \(C = 2\pi r\), where \(r\) is the radius of the circle.

Step2: Substitute the given radius into the formula

Given \(r=1.1\) cm. Substitute \(r = 1.1\) into \(C = 2\pi r\). So \(C=2\times\pi\times1.1\).

Step3: Calculate the value

\(C = 2\times3.14\times1.1\) (using \(\pi\approx3.14\)). First, \(2\times1.1 = 2.2\). Then \(C=2.2\times3.14=6.908\).

Step4: Round to the nearest tenth

To round \(6.908\) to the nearest tenth, look at the hundredth - digit. The hundredth - digit is \(0\). So \(6.908\approx6.9\).

Answer:

\(6.9\)