1000 Football Clubs: Teams, Stadiums, and Legends of the Beautiful Game

1000 Football Clubs: Teams, Stadiums, and Legends of the Beautiful Game

Matematika bantu plss, pake cara​

bantu plss, pake cara​

Jawab:

No 3

a. 40,2 cm

b. 20,1 cm

c. 1.268,59 cm

No 4

225,75 cm

No 5

Keliling 379,22

Luas 4.654,26

Penjelasan dengan langkah-langkah:

3.

a.

[tex]\pi[/tex]² X r = K

K :  [tex]\pi[/tex]² = r

3,14 X 3,14 = 9,85...

198 : 9,85 = 20,1....

r nya adalah 20,1 cm

Diameter = r + r = d

20,1 + 20,1 = 40,2

---------------------------------------------

b.

[tex]\pi[/tex]² X r = K

K : [tex]\pi[/tex]² = r

3,14 X 3,14 = 9,85...

198 : 9,85 = 20,1...

r nya adalah 20,1 cm

---------------------------------------------

c.

[tex]\pi[/tex]  ² X r = K

K : [tex]\pi[/tex]  ² = r

3,14 X 3,14 = 9,85...

198 : 9,85 = 20,1...

r nya adalah 20,1 cm

Rumus Luas Adalah:

[tex]\pi[/tex] X r² =

3,14 X 20,1² =

3,14 X 404,01 = 1.268,59...

4.

[tex]\pi[/tex]  ² X r = K

K : [tex]\pi[/tex]  ² = r

3,14 X 3,14 = 9,85...

84 : 9,85 = 8,52...

r nya adalah 8,52 cm

Rumus Luas Adalah:

[tex]\pi[/tex]  X r² =

3,14 X 8,52² =

3,14 X 72,59 = 225,75

5.

Rumus Keliling Adalah:

  [tex]\pi[/tex]² X r = K

d : 2 = r

77 : 2 = 38,5

3,14 X 3,14 = 9,85...

9,85 X 38,5 = 379,22...

Rumus Luas Adalah:

[tex]\pi[/tex]  X r² = L

d : 2 = r

77 : 2 = 38,5

3,14 X 38,5² =

3,14 X 1.482,25 = 4.654,26...

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