Išpjovos lanko ilgis ir plotas

Išpjovos lanko ilgis ir plotas

10th Grade

14 Qs

quiz-placeholder

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Išpjovos lanko ilgis ir plotas

Išpjovos lanko ilgis ir plotas

Assessment

Quiz

Mathematics

10th Grade

Practice Problem

Hard

Created by

Miglė Kavaliauskė

Used 11+ times

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14 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Skritulio ploto formulė yra?

S=2πrS=2\pi r

S=2πr2S=2\pi r^2

S=πr2S=\pi r^2

S=πrS=\pi r

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Apskritimo ilgis apskaičiuojamas taikant formulę -

C=πr2C=\pi r^2

C=πrC=\pi r

C=2πr2C=2\pi r^2

C=2πrC=2\pi r

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Skritulio išpjovos ploto formulė

Sisˇpjovos=πr2360oαS_{išpjovos}=\frac{\pi r^2}{360^o}\cdot\alpha

Sisˇpjovos=πr2180oαS_{išpjovos}=\frac{\pi r^2}{180^o}\cdot\alpha

Sisˇpjovos=2πr360oαS_{išpjovos}=\frac{2\pi r}{360^o}\cdot\alpha

Sisˇpjovos=πr2αS_{išpjovos}=\frac{\pi r^2}{\alpha}

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Skritulio išpjovos spindulys lygus 6 , jos kampas  α=120o\alpha=120^o  . Apskaičiuoti išpjovos plotą.

 12π12\pi  

 36π36\pi  

 18π18\pi  

 6π6\pi  

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Išpjovos lanko ilgis  2π3cm\frac{2\pi}{3}cm  , o šios išpjovos centrinis kampas lygus  30°30\degree  . Koks išpjovos spindulio ilgis?

4 cm

2 cm

 45 cm4\sqrt{5\ }cm  

40 cm

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Išpjovos plotas lygus  56π cm256\pi\ cm^2 , o spindulys lygus 12cm. Koks šią išpjovą atitinkančio kampo didumą ?

 5615°\frac{56}{15}\degree  

 70°70\degree  

 140°140\degree  

 120°120\degree  

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Išpjovos lanko ilgis lygus  5π5\pi  , o spindulys lygus 10. Koks išpjovos kampas  α\alpha  ?

 90o90^o  

 120o120^o  

 1800180^0  

 60o60^o  

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