Question
Find the area of a circle with a diameter of 8 cm.
Use the formula: A = πr2
Use 3.14 for π
and leave your answer to the nearest hundredth.
Type in your final answer in the box below (number only).
(1 point)
A=
cm2
Use the formula: A = πr2
Use 3.14 for π
and leave your answer to the nearest hundredth.
Type in your final answer in the box below (number only).
(1 point)
A=
cm2
Answers
GPT-4o mini
To find the area of the circle, we first need to determine the radius. The radius \( r \) is half of the diameter.
Given:
- Diameter = 8 cm
So, the radius \( r \) is:
\[
r = \frac{8}{2} = 4 \text{ cm}
\]
Now, we can use the area formula \( A = \pi r^2 \).
Substituting in the values:
\[
A = 3.14 \times (4)^2
\]
\[
A = 3.14 \times 16
\]
\[
A = 50.24 \text{ cm}^2
\]
Therefore, the area of the circle, rounded to the nearest hundredth, is:
\[
\boxed{50.24}
\]
Given:
- Diameter = 8 cm
So, the radius \( r \) is:
\[
r = \frac{8}{2} = 4 \text{ cm}
\]
Now, we can use the area formula \( A = \pi r^2 \).
Substituting in the values:
\[
A = 3.14 \times (4)^2
\]
\[
A = 3.14 \times 16
\]
\[
A = 50.24 \text{ cm}^2
\]
Therefore, the area of the circle, rounded to the nearest hundredth, is:
\[
\boxed{50.24}
\]