Apskritimas Plotas Ir Perimetras Flashcards

1
Q

Apskritimo ilgis, kiek kartu jis dedesnis uz spinduli

A

2pi

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2
Q

Apskritimo ilgis, kiek kartu jis dedesnis uz skersmeni

A

Pi

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3
Q

Kas yra skaicius pi

A

Begaline desimtaine neperiodine trumpmena

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4
Q

Pi skaicius kaip netaisiklinga trupmena

A

22

7

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5
Q

Apskritimo ilgio formule

A

C = pi • d
C = pi • r • 2

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6
Q

Apskritimo ploto formule

A

S=pi•r²
S=pi•d = pi • d² = Pi • d²
— — ———
2 4 4

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7
Q

1dm² kiek cm²

A

100cm²

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8
Q

1m² kiek cm²

A

10 000 cm²

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9
Q

1cm² kiek mm²

A

100mm²

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10
Q

1a kiek m²

A

100m² nes 10•10 (kvadrato plotas)

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11
Q

1 ha kie m²

A

10 000 m² nes 100•100

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12
Q

Kaio suzinoti d ilgi (zinant spilduli, apskritimo ilgi)?

A

d=2•r
d=C:pi

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13
Q

Kaip suzinoti r (tinant apskritimo ilgi, ir skresmeni)?

A

r=d:2
r=C:2•Pi

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