Doira yuzi — 9-sinf Geometriya test savollari

Bu mavzuda 15 ta test savoli bor. Quyida 10 ta namuna — to'liq test va javoblar kaliti ro'yxatdan o'tgandan keyin ochiladi.

1.R = 20 sm (π ≈ 3,14). Doira yuzini taxminiy hisoblang.
- A)1256 sm²
- B)2512 sm²
- C)125,6 sm²
- D)628 sm²
2.Ikkita doiraning radiuslari nisbati 2:3. Ularning yuzlari nisbatini toping.
- A)16:81
- B)2:3
- C)8:27
- D)4:9
3.Doira yuzi 78,5 sm² (π ≈ 3,14). Uning radiusini toping.
- A)10 sm
- B)25 sm
- C)5 sm
- D)7,85 sm
4.Ikki doiraning yuzlari 9π sm² va 25π sm². Ularning radiuslari nisbatini toping.
- A)9:25
- B)3:5
- C)81:625
- D)5:3
5.R = 5 sm. Doira yuzini toping.
- A)10π sm²
- B)25π sm²
- C)5π sm²
- D)50π sm²
6.R = 7 sm. Doira yuzini toping.
- A)98π sm²
- B)49π sm²
- C)14π sm²
- D)7π sm²
7.R = 10 sm. Doira yuzini toping.
- A)20π sm²
- B)50π sm²
- C)100π sm²
- D)10π sm²
8.Doira yuzi 36π sm². Uning radiusini toping.
- A)18 sm
- B)3 sm
- C)36 sm
- D)6 sm
9.Diametri 20 sm bo‘lgan doiraning yuzini toping.
- A)400π sm²
- B)10π sm²
- C)20π sm²
- D)100π sm²
10.Doira radiusi 3 marta kattalashtirilsa, uning yuzi necha marta ortadi?
- A)3 marta
- B)27 marta
- C)6 marta
- D)9 marta

«Doira yuzi» bo'yicha barcha 15 ta savolni javoblari bilan oling: Test Generator ularni variantlarga bo'ladi, DTM titulida chop etadi va javob varaqalarini rasm orqali tekshiradi.

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Doira yuzi — 9-sinf Geometriya test savollari

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