The diameter of a circle is 10 ft. Find its area to the nearest whole number.


To find the area of a circle, we use the formula:

\[
\text{Area} = \pi r^2
\]

Where:
- \( r \) is the radius of the circle.

The diameter of the circle is 10 ft, so the radius \( r \) is half of the diameter:

\[
r = \frac{10}{2} = 5 \, \text{ft}
\]

Now, substitute the radius into the area formula:

\[
\text{Area} = \pi (5)^2 = \pi \times 25 \approx 3.1416 \times 25 = 78.54 \, \text{sq ft}
\]

To the nearest whole number, the area is:

\[
\boxed{79} \, \text{sq ft}
\]

Would you like more details or have any questions?

Here are 5 related questions to further explore:
1. What is the circumference of the same circle?
2. How would the area change if the diameter were doubled?
3. What is the radius of a circle if its area is 314 square feet?
4. How does the formula for the area of a circle change for a semicircle?
5. Can you express the area in terms of the diameter instead of the radius?

**Tip:** Always remember that the radius is half of the diameter when working with circles.

The diameter of a circle is 10 ft. Find its area to the nearest whole number.

Learn how to find the area of a circle with a diameter of 10 ft using the formula A = πr^2. The radius is half of the diameter, leading to an area of approximately 79 square feet. Suitable for students in Grades 6-8.

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