Question

4 cm
Shape: Circle
Calculate the area of the circle.
Area of a circle: 3.14 x r²
A = [?] cm²
Round to the nearest hundredth.

Answer 1

To calculate the area of a circle with a radius of 4 cm, you can use the formula:

\[
A = \pi r^2
\]

Given that \( \pi \) is approximately 3.14 and the radius \( r = 4 \) cm:

\[
A = 3.14 \times (4)^2
\]

First, calculate \( (4)^2 \):

\[
(4)^2 = 16
\]

Now substitute back into the area formula:

\[
A = 3.14 \times 16
\]

Now multiply:

\[
A = 50.24 \text{ cm}^2
\]

Therefore, the area of the circle is:

\[
A = 50.24 \text{ cm}^2
\]

When rounded to the nearest hundredth, it remains:

\[
A = 50.24 \text{ cm}^2
\]