Question

the radius of a circle is 10.7 cm. find the circumference to the nearest tenth.

Explanation:

Step1: Recall circumference formula

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

Step2: Substitute the radius value

Given \( r = 10.7 \) cm, substitute into the formula: \( C = 2\times\pi\times10.7 \).

Step3: Calculate the value

First, calculate \( 2\times10.7 = 21.4 \). Then, \( C = 21.4\pi \). Using \( \pi \approx 3.14159 \), we get \( C \approx 21.4\times3.14159 \approx 67.2 \) (rounded to the nearest tenth).

Answer:

The circumference is approximately \( 67.2 \) cm.