Question

question
the radius of a circle is 12 cm. find its area to the nearest whole number.
answer attempt 1 out of 2
a = cm² submit answer

Explanation:

Step1: Recall the formula for the area of a circle

The formula for the area of a circle is \(A = \pi r^{2}\), where \(r\) is the radius of the circle.

Step2: Substitute the given radius into the formula

Given \(r = 12\) cm, we substitute into the formula: \(A=\pi\times(12)^{2}\). First, calculate \((12)^{2}=144\). So \(A = 144\pi\).

Step3: Calculate the numerical value

Taking \(\pi\approx3.14159\), then \(A=144\times3.14159 = 452.389\).

Step4: Round to the nearest whole number

Rounding \(452.389\) to the nearest whole number gives \(452\).

Answer:

\(452\)