Question

Fill in the box with the appropriate measure.
Put responses in the correct input to answer the question. Select a response, navigate to the desired input and insert the response. Responses can be selected and inserted using the space bar, enter key, left mouse button or touchpad. Responses can also be moved by dragging with a mouse.
r = 4 d = 6 C = 18π
9pi 9 81pi 16pi 6pi 8 3 8pi 18

Answer 1

To fill in the box with the appropriate measure related to the circumference (C), diameter (d), or radius (r) of a circle, we can use the following relationships:

1. \( C = \pi d \)
2. \( d = 2r \)
3. \( C = 2\pi r \)

Given:
- \( r = 4 \)
- \( d = 6 \)
- \( C = 18\pi \)

Now, let's analyze:

1. For \( d = 6 \):
- If we calculate the diameter from the radius:
\[
d = 2r = 2(4) = 8
\]
- This indicates that there's a discrepancy since \( d = 6 \) should not correspond with \( r = 4 \).

2. For \( C \):
- Using \( C = \pi d \):
\[
C = \pi(6) = 6\pi
\]

Thus, based on the correct relationships, the circumference should be:

Given that the \( C = 18\pi \), there might be a different radius or diameter associated with this circumference. Let's calculate the radius from \( C = 2 \pi r \):
\[
18\pi = 2\pi r \Rightarrow r = \frac{18\pi}{2\pi} = 9
\]
This would indicate \( r = 9 \) must be correct.

So, potentially, we have:
- The radius must be 9 to generate \( C = 18\pi \).
- The diameter calculated from \( r = 9 \) would be \( d = 2(9) = 18 \).

Given the choices available (and possibly inconsistent measures in your input), if we only stick to filling common measures and check the relationships, the only viable output for the empty box based on \( C = 18\pi \):

The measure for Circumference is \( 18\pi \) (already stated), and we've adjusted the radius to \( 9 \) based on popular math notations.

Hence, let's summarize the right responses you should fill:
- Radius: **9**
- Diameter: **18**
- Circumference: **18π**

Select and fill **9** in the radius box, adding potentially another check on your initial values for accuracy based on the query but according to the data provided.

If you need to fill one box specifically, please clarify which measure you want to collect precisely.