Question

find the circumference and area of this figure.
c = ? units
a = units²
use π = 3.14
round your answer to the nearest hundredth.

Explanation:

Step1: Find the radius

From the graph, the distance between the two points (diameter) is \(2\) units. So radius \(r=\frac{2}{2}=1\) unit.

Step2: Calculate the circumference

The formula for circumference is \(C = 2\pi r\). Substitute \(r = 1\) and \(\pi=3.14\).
\(C=2\times3.14\times1=6.28\)

Step3: Calculate the area

The formula for area of a circle is \(A=\pi r^{2}\). Substitute \(r = 1\) and \(\pi = 3.14\).
\(A=3.14\times1^{2}=3.14\)

Answer:

$C = 6.28$ units
$A = 3.14$ units²