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9BCF PÖÖRDKEHAD

Authored by Mailen Remmelg

Mathematics

9th Grade

Used 7+ times

9BCF PÖÖRDKEHAD
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10 questions

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1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Millise valemiga saab leida silindri täispindala?

St=2Sp+SkS_t=2S_p+S_k

St=Sp+SkS_t=S_p+S_k

St=2Sk+SpS_t=2S_k+S_p

St=Sp+HS_t=S_p+H

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Kui poolring panna pöörlema ümber oma diameetri, tekib ...

Kera

Silinder

Koonus

Ring

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Koonus tekib ... pöörlemisel ümber ühe oma kaateti

täisnurkse kolmnurga

trapetsi

rombi

ristküliku

4.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Avalda silindri ruumala valemist kõrgus H

 H=Vπr2H=\frac{V}{\pi r^2} 

 H=2VSpH=\frac{2V}{S_p} 

 H=3VSpH=\frac{3V}{S_p} 

 H=SpSkH=S_p-S_k 

5.

FILL IN THE BLANK QUESTION

30 sec • 1 pt

Kui koonuse raadius on 7 cm, siis põhja läbimõõt on

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Kera pindala saab leida valemiga

S=4πR2S=4\pi R^2

S=πr2S=\pi r^2

S=dHS=dH

S=2πrS=2\pi r

7.

OPEN ENDED QUESTION

15 mins • Ungraded

Kui suur pind tuleb värvida, kui värvitakse koonust, mille raadius on 7 cm ja kõrgus 0,3 m. Kirjuta vastus sajandiku täpsusega ja selgita, kuidas vastuseni jõudsid.

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