Question

find the area and the circumference. use 3.14 for π.
part 1 of 2
the area is approximately 12.56 cm².
part 2 of 2
the circumference is approximately

Explanation:

Step1: Find the radius

Given the diameter \(d = 4\) cm. The radius \(r=\frac{d}{2}\), so \(r=\frac{4}{2}=2\) cm.

Step2: Calculate the circumference

The formula for the circumference of a circle is \(C = 2\pi r\) (or \(C=\pi d\)). Using \(C=\pi d\) with \(\pi = 3.14\) and \(d = 4\) cm.
\(C=3.14\times4\)
\(C = 12.56\) cm

Answer:

\(12.56\) cm