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- 1. Multiple-choice20 seconds1 pt
what word is ๅๆฑ๏ผ
cylinder
circle
diameter
cone
- 2. Multiple-choice20 seconds1 pt
when radius is halved, how does the circumference of circle change?
does not change
2
- 3. Multiple-choice20 seconds1 pt
when radius is halved, how does the area of circle change?
does not change
2
- 4. Multiple-choice20 seconds1 pt
When side expansion(ไพง้ขๅฑๅผๅพ) of cylinder is a square, it means_____
c=s
c=h
d=h
s=h
- 5. Multiple-choice1 minute1 pt
Find the lateral area of cylinder whose height is 3cm and base radius is 1cm
- 6. Multiple-choice20 seconds1 pt
What is surface area?
่กจ้ข็งฏ
ไพง้ข็งฏ
ๅบ้ข็งฏ
ๆจชๆช้ข็งฏ
- 7. Multiple-choice30 seconds1 pt
25
0.25
2.5
0.025
- 8. Multiple-choice2 minutes1 pt
ไธไธชๅๆฑ็ๅบ้ขๅจ้ฟๆฏ12.56cm, ้ซๆฏ15cm๏ผ่ฟไธชๅๆฑ็่กจ้ข็งฏๆฏ๏ผ ๏ผ ,ไฝ็งฏๆฏ๏ผ ๏ผ
188.4, 213.52
213.52, 188.4
106.76, 188.4
213.52, 106.76
- 9. Multiple-choice45 seconds1 pt
ๆต้ไธไธช้ธก่็ไฝ็งฏ๏ผ็จไธไธชๅบ้ข็ดๅพๆฏ8cm็ๅๆฑๅฝข็ป็ๆฏ๏ผๅฎ้ชๅฆๅพ๏ผ่ฏฏๅทฎๅฟฝ็ฅไธ่ฎฐ๏ผๅ้ธก่็ไฝ็งฏๆฏๅคๅฐ็ซๆนๅ็ฑณ๏ผ
50.24
25.12
75.36
200.96
