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 diameter \(d = 4\) cm. Radius \(r=\frac{d}{2}\), so \(r = \frac{4}{2}=2\) cm.

Step2: Calculate the circumference

Circumference formula \(C = 2\pi r\). Substitute \(r = 2\) cm and \(\pi=3.14\).
\(C=2\times3.14\times2\)
\(C = 12.56\) cm.

Answer:

\(12.56\) cm