What is the area of a circle with a diameter of 10 millimeters? Estimate the area to the tenths place using 3.14 for π .(1 point) Responses 79 square mm 79 square mm 78.5 square mm 78.5 square mm 15.7 square mm 15.7 square mm 314 square mm

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

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

where \( r \) is the radius of the circle. Since the diameter of the circle is 10 millimeters, the radius is half of that:

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

Now, using \( \pi \approx 3.14 \), we can calculate the area:

\[
\text{Area} = 3.14 \times (5)^2 = 3.14 \times 25 = 78.5 \text{ square mm}
\]

Therefore, the area of the circle is **78.5 square mm**.