A circle has a radius of 7 cm. What is the area of the circle?

The formula for the area of a circle is:

\[
A = \pi r^2
\]

where \(r\) is the radius. Substituting the given radius \(r = 7 \, \text{cm}\):

\[
A = \pi (7)^2 = \pi \times 49
\]

Now, using the approximation \(\pi \approx 3.1416\):

\[
A \approx 3.1416 \times 49 = 153.9384 \, \text{cm}^2
\]

So, the area of the circle is approximately \(153.94 \, \text{cm}^2\).

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Here are some related questions:
1. What is the circumference of the circle with the same radius?
2. How would the area change if the radius doubled?
3. What is the area of a semicircle with a radius of 7 cm?
4. How does the formula for the area of a circle

Learn how to calculate the area of a circle with a radius of 7 cm using the formula A = πr². The solution walks through each step of the calculation, including substituting the radius and using π ≈ 3.1416 to find the area. Suitable for students in Grades 6-8.

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