Question

calculate the area of the circle. area of a circle: 3.14 × r² a = ? in² round to the nearest hundredth.

Explanation:

Step1: Substitute the radius into the formula

The formula for the area of a circle is \(A = 3.14\times r^{2}\), and the radius \(r = 2\) in. So we substitute \(r = 2\) into the formula: \(A=3.14\times2^{2}\).

Step2: Calculate the value of \(r^{2}\)

First, calculate \(2^{2}=2\times2 = 4\). Then the formula becomes \(A = 3.14\times4\).

Step3: Calculate the final area

\(3.14\times4=12.56\).

Answer:

\(12.56\)