Question

find the area.
22 cm
a =? cm²
a = πr²
use π = 3.14

Explanation:

Step1: Find the radius

The diameter is \(22\) cm. The radius \(r=\frac{22}{2} = 11\) cm.

Step2: Calculate the area

Using the formula \(A=\pi r^{2}\), substitute \(\pi = 3.14\) and \(r = 11\).
\(A=3.14\times11^{2}\)
\(A=3.14\times121\)
\(A = 379.94\)

Answer:

\(379.94\)