hitunglah luas lingkaran yang kelilinganya 88cm

Please, let me answer your question :)
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Mapel : Matematika
Tentang : Bangun Datar
Pertanyaan yg diajukan : 1
Pembahasan :

Diketahui :
- Keliling (K) : 88 cm

Ditanya :
- Luas (L)

Cara :

[tex]k = 2 \times \pi \times r \\ \\ 88 = 2 \times \frac{22}{7} \times r[/tex]

[tex]88 = \frac{44}{7} \times r \\ \\ r = \frac{88}{ \frac{44}{7} } [/tex]

[tex]r = 88 \times \frac{7}{44} \\ \\ r = 14 \: cm[/tex]

[tex]l = \pi \times {r}^{2} \\ \\ l = \frac{22}{7} \times 14 \times 14[/tex]

[tex]l = 22 \times 2 \times 14 \\ \\ l = 44 \times 14[/tex]

[tex]l = 616 \: {cm}^{2} [/tex]

Jadi, Luasnya adalah 616 cm²

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Hopefully this is the best for you. And please, MAKE BRAINLY GREAT AGAIN!!!

✚ Heil Manstein! ✚

{answer}

Keliling = 22/7 × d = 88 cm

d = 88 ÷ 22 × 7 = 28

Luas = 22/7 × r × r

Luas = 22/7 × 14 × 14

Luas = 616 cm²

{semoga membantu}