101 Ready To Use Microsoft Excel Macros: MyExcelOnline.com (101 Microsoft Excel Series)

101 Ready To Use Microsoft Excel Macros: MyExcelOnline.com (101 Microsoft Excel Series)

Matematika luas lingkaran tersebut adalah

pakai cara yaaa​

luas lingkaran tersebut adalah

pakai cara yaaa​

Jawaban:

diketahui

  • d = 21cm maka
  • r = 21/2 = 10,5cm

ditanya

luas

jawab

luas

[tex] \boxed{ \sf L=\pi \times {r}^{2} } \\ atau \\ \boxed{ \sf L=\pi \times r\times r}[/tex]

[tex] \: \: \: \: \sf = \frac{22}{7} \times 10,5 \times 10,5[/tex]

[tex] \: \: \: \: \sf = \frac{22}{7} \times 110,25[/tex]

[tex] \: \: \: \: \sf = 346,5 {cm}^{2} [/tex]

keliling

[tex] \boxed{ \sf k=\pi \times d } [/tex]

[tex] \: \: \: \: \sf = \frac{22}{\cancel7} \times \cancel{ 21} {\:}^{\red3}[/tex]

[tex] \: \: \: \: \sf = 22 \times 3[/tex]

[tex] \: \: \: \: \sf = 66cm[/tex]

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