10 in

Shape: Circle
Find the area of the circle.
Area of a circle: 3.14 x r²
A = [?] in²
Round to the nearest hundredth.

1 answer

To find the area of a circle, you can use the formula:

\[ A = \pi r^2 \]

Given that the diameter of the circle is 10 inches, the radius \( r \) can be calculated as:

\[ r = \frac{\text{diameter}}{2} = \frac{10}{2} = 5 \text{ inches} \]

Now, substitute the radius into the area formula using \( \pi \approx 3.14 \):

\[ A = 3.14 \times (5)^2 \] \[ A = 3.14 \times 25 \] \[ A = 78.5 \text{ in}^2 \]

Rounding to the nearest hundredth, the area of the circle is:

\[ A \approx 78.50 \text{ in}^2 \]

So, the area of the circle is 78.50 in².