KD. 3.5: 2. Luas Lingkaran

KD. 3.5: 2. Luas Lingkaran

4th - 6th Grade

20 Qs

quiz-placeholder

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KD. 3.5: 2. Luas Lingkaran

KD. 3.5: 2. Luas Lingkaran

Assessment

Quiz

Mathematics

4th - 6th Grade

Practice Problem

Medium

Created by

Agustina Fauza

Used 95+ times

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20 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Media Image

Luas lingkaran pada gambar adalah . . . .

145 cm²

154 cm²

451 cm²

415 cm²

Answer explanation

Luas Lingkaran

= π r2

= 22/7 X 7 cm X 7 cm

(7 dan 7 saling bagi)

= 22 X 7 cm

= 154 cm2

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Media Image

Luas lingkaran pada gambar adalah . . . .

154 cm²

616 cm²

1.386 cm²

2.464 cm²

Answer explanation

Luas Lingkaran

= π r2

( r = 28:2 = 14 cm )

= 22/7 X 14 cm X 14 cm

( 7 dan 14 saling bagi )

= 22 X 2 cm X 14 cm

= 44 cm X 14 cm

= 616 cm2

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Luas lingkaran yang berdiameter 20 cm adalah . . . .

0,314 cm²

3,14 cm²

31,4 cm²

314 cm²

Answer explanation

Luas lingkaran

= π r2

( r = 1/2 X d = d : 2 )

( r = 20 : 2 = 10 cm )

= 3,14 X 10 cm X 10 cm

= 314 cm2

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Media Image

Luas bangun pada gambar adalah . . . .

1246

1256

1266

1276

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Media Image

Luas bangun pada gambar adalah . . . .

462

482

542

562

Answer explanation

Luas Bentuk Lingkaran

= 3/4 π r2

= 3/4 X 22/7 X 14 cm X 14 cm

(7 dan 14 saling bagi)

= 3/4 X 22 X 2 cm X 14 cm

(4 dan 2 saling bagi)

= 3/2 X 22 cm X 14 cm

(2 dan 22 saling bagi)

= 3 X 11 cm X 14 cm

= 462 cm2

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Emir mempunyai selembar kertas berbentuk lingkaran dengan luas 616 cm². Diameter kertas Emir adalah . . . .

A. 28 cm

C. 29 cm

B. 82 cm

D. 92 cm

Answer explanation

Luas Lingkaran

= π r2

= 22/7 r2 = 616 cm2

r2 = 616 cm2 : 22/7

r2 = 616 cm2 X 7∕22

(616 dan 22 saling bagi)

= 28 cm2 X 7

= 196 cm2

r = √196 cm2

= 14 cm

d = 2r

= 2 X 14 cm

= 28 cm

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Media Image

Luas lingkaran pada gambar di atas adalah  . . . . 

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