QUESTION IMAGE
Question
- \\(m\widehat{can} = 226^{\circ}\\). find \\(m\widehat{cn}\\).
- \\(df = 30\\). find the circumference of \\(\odot e\\).
- \\(m\widehat{dow} = 294^{\circ}\\). find \\(m\widehat{dw}\\).
- \\(no = 24\\). find the circumference of \\(\odot n\\).
- \\(uq = 13\\). find the circumference of \\(\odot u\\).
- \\(on = 43\\). find \\(ot\\).
- \\(is = 17\\). find the circumference of \\(\odot r\\).
- \\(tv = 32\\). find \\(uv\\).
<pre_analysis>
{
"quality": "clear",
"question_count": 8,
"skills_matched": [
"step_cot",
"table_formatter",
"explain_then_answer",
"tutor"
],
"needs_drawing": false,
"concepts_used": [],
"new_concepts": [
"Arc Measure",
"Circle Circumference",
"Circle Radius and Diameter"
],
"current_concepts": [
"Arc Measure",
"Circle Circumference",
"Circle Radius and Diameter"
]
}
</pre_analysis>
<reasoning>
Find the measure of arc MCN
The measure of a full circle is \(360^\circ\). The major arc \(\widehat{CAN}\) has a measure of \(226^\circ\). The remaining arc \(\widehat{MCN}\) completes the circle:
\[
m\widehat{MCN} = 360^\circ - m\widehat{CAN} = 360^\circ - 226^\circ = 134^\circ
\]
Find the circumference of circle E
The diameter of circle \(E\) is \(DF = 30\). The formula for the circumference \(C\) using diameter \(d\) is:
\[
C = \pi d = 30\pi \approx 94.25
\]
Find the measure of arc MDW
The major arc \(\widehat{DOW}\) has a measure of \(294^\circ\). The remaining arc \(\widehat{MDW}\) completes the circle:
\[
m\widehat{MDW} = 360^\circ - m\widehat{DOW} = 360^\circ - 294^\circ = 66^\circ
\]
Find the circumference of circle N
The radius of circle \(N\) is \(NO = 24\). The formula for the circumference \(C\) using radius \(r\) is:
\[
C = 2\pi r = 2\pi(24) = 48\pi \approx 150.80
\]
Find the circumference of circle U
The radius of circle \(U\) is \(UQ = 13\). The formula for the circumference \(C\) is:
\[
C = 2\pi r = 2\pi(13) = 26\pi \approx 81.68
\]
Find the length of OT
The segment \(ON\) is a radius of circle \(O\), so \(ON = 43\). Since \(OT\) is also a radius of the same circle \(O\), its length must be equal to \(ON\):
\[
OT = ON = 43
\]
Find the circumference of circle R
The diameter of circle \(R\) is \(IS = 17\). The formula for the circumference \(C\) is:
\[
C = \pi d = 17\pi \approx 53.41
\]
Find the length of UV
The segment \(TV\) is a diameter of circle \(U\) with length \(TV = 32\). The segment \(UV\) is a radius of circle \(U\). The radius is half of the diameter:
\[
UV = \frac{TV}{2} = \frac{32}{2} = 16
\]
</reasoning>
<answer>
| No. | Problem | Answer |
|---|---|---|
| 10 | \(DF=30\). Find the circumference of \(\odot E\). | \(30\pi \approx 94.25\) |
| 11 | \(m\widehat{DOW}=294^\circ\). Find \(m\widehat{MDW}\). | \(66^\circ\) |
| 12 | \(NO=24\). Find the circumference of \(\odot N\). | \(48\pi \approx 150.80\) |
| 13 | \(UQ=13\). Find the circumference of \(\odot U\). | \(26\pi \approx 81.68\) |
| 14 | \(ON=43\). Find \(OT\). | \(43\) |
| 15 | \(IS=17\). Find the circumference of \(\odot R\). | \(17\pi \approx 53.41\) |
| 16 | \(TV=32\). Find \(UV\). | \(16\) |
</answer>
<post_analysis>
{
"subject": "Mathematics",
"question_type": "Multi-part",
"knowledge_point": [
"Mathematics",
"Geometry",
"Circle Properties"
]
}
</post_analysis>
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<pre_analysis>
{
"quality": "clear",
"question_count": 8,
"skills_matched": [
"step_cot",
"table_formatter",
"explain_then_answer",
"tutor"
],
"needs_drawing": false,
"concepts_used": [],
"new_concepts": [
"Arc Measure",
"Circle Circumference",
"Circle Radius and Diameter"
],
"current_concepts": [
"Arc Measure",
"Circle Circumference",
"Circle Radius and Diameter"
]
}
</pre_analysis>
<reasoning>
Find the measure of arc MCN
The measure of a full circle is \(360^\circ\). The major arc \(\widehat{CAN}\) has a measure of \(226^\circ\). The remaining arc \(\widehat{MCN}\) completes the circle:
\[
m\widehat{MCN} = 360^\circ - m\widehat{CAN} = 360^\circ - 226^\circ = 134^\circ
\]
Find the circumference of circle E
The diameter of circle \(E\) is \(DF = 30\). The formula for the circumference \(C\) using diameter \(d\) is:
\[
C = \pi d = 30\pi \approx 94.25
\]
Find the measure of arc MDW
The major arc \(\widehat{DOW}\) has a measure of \(294^\circ\). The remaining arc \(\widehat{MDW}\) completes the circle:
\[
m\widehat{MDW} = 360^\circ - m\widehat{DOW} = 360^\circ - 294^\circ = 66^\circ
\]
Find the circumference of circle N
The radius of circle \(N\) is \(NO = 24\). The formula for the circumference \(C\) using radius \(r\) is:
\[
C = 2\pi r = 2\pi(24) = 48\pi \approx 150.80
\]
Find the circumference of circle U
The radius of circle \(U\) is \(UQ = 13\). The formula for the circumference \(C\) is:
\[
C = 2\pi r = 2\pi(13) = 26\pi \approx 81.68
\]
Find the length of OT
The segment \(ON\) is a radius of circle \(O\), so \(ON = 43\). Since \(OT\) is also a radius of the same circle \(O\), its length must be equal to \(ON\):
\[
OT = ON = 43
\]
Find the circumference of circle R
The diameter of circle \(R\) is \(IS = 17\). The formula for the circumference \(C\) is:
\[
C = \pi d = 17\pi \approx 53.41
\]
Find the length of UV
The segment \(TV\) is a diameter of circle \(U\) with length \(TV = 32\). The segment \(UV\) is a radius of circle \(U\). The radius is half of the diameter:
\[
UV = \frac{TV}{2} = \frac{32}{2} = 16
\]
</reasoning>
<answer>
| No. | Problem | Answer |
|---|---|---|
| 10 | \(DF=30\). Find the circumference of \(\odot E\). | \(30\pi \approx 94.25\) |
| 11 | \(m\widehat{DOW}=294^\circ\). Find \(m\widehat{MDW}\). | \(66^\circ\) |
| 12 | \(NO=24\). Find the circumference of \(\odot N\). | \(48\pi \approx 150.80\) |
| 13 | \(UQ=13\). Find the circumference of \(\odot U\). | \(26\pi \approx 81.68\) |
| 14 | \(ON=43\). Find \(OT\). | \(43\) |
| 15 | \(IS=17\). Find the circumference of \(\odot R\). | \(17\pi \approx 53.41\) |
| 16 | \(TV=32\). Find \(UV\). | \(16\) |
</answer>
<post_analysis>
{
"subject": "Mathematics",
"question_type": "Multi-part",
"knowledge_point": [
"Mathematics",
"Geometry",
"Circle Properties"
]
}
</post_analysis>