Question
What is the area of a circle with a radius of 7 cm? (Use 3.14 for Pi and round to the nearest tenth.)
Answers
GPT-4o mini
To find the area of a circle, you can use the formula:
\[
\text{Area} = \pi r^2
\]
Where \( \pi \) is approximately 3.14 and \( r \) is the radius of the circle.
Given that the radius \( r = 7 \) cm, we can calculate the area as follows:
\[
\text{Area} = 3.14 \times (7)^2
\]
Calculating \( (7)^2 \):
\[
(7)^2 = 49
\]
Now substituting back into the area formula:
\[
\text{Area} = 3.14 \times 49
\]
Next, we perform the multiplication:
\[
3.14 \times 49 = 153.86
\]
Finally, rounding to the nearest tenth gives us:
\[
\text{Area} \approx 153.9 \text{ cm}^2
\]
Therefore, the area of the circle is approximately **153.9 cm²**.
\[
\text{Area} = \pi r^2
\]
Where \( \pi \) is approximately 3.14 and \( r \) is the radius of the circle.
Given that the radius \( r = 7 \) cm, we can calculate the area as follows:
\[
\text{Area} = 3.14 \times (7)^2
\]
Calculating \( (7)^2 \):
\[
(7)^2 = 49
\]
Now substituting back into the area formula:
\[
\text{Area} = 3.14 \times 49
\]
Next, we perform the multiplication:
\[
3.14 \times 49 = 153.86
\]
Finally, rounding to the nearest tenth gives us:
\[
\text{Area} \approx 153.9 \text{ cm}^2
\]
Therefore, the area of the circle is approximately **153.9 cm²**.