Question

find the area.
11 in
a = ? in²
a = πr²
use π = 3.14

Explanation:

Step1: Substitute the radius into the formula

The formula for the area of a circle is \(A=\pi r^{2}\), and \(r = 11\) in. So \(A=3.14\times11^{2}\).

Step2: Calculate \(11^{2}\)

\(11^{2}=11\times11 = 121\). Then \(A = 3.14\times121\).

Step3: Multiply

\(3.14\times121=(3 + 0.14)\times121=3\times121+0.14\times121=363+16.94 = 379.94\).

Answer:

\(379.94\)