Question

yang nomor 2 sjaa makasii​

Answer 1

Verified answer

Rumus keliling Lingkaran :

[tex]\boxed{ \tt \color{lime}{keliling \: = 2 \times \pi \times r}}[/tex]

keterangan :

• π = phi
• r = jari-jari

Jawaban :

• mencari jari jari :

r = d ÷ 2

r = 28 ÷ 2

r = 14 cm

• mencari keliling lingkaran :

[tex] = 2 \times \pi \times r[/tex]

[tex] = 2 \times \frac{22}{7} \times 14[/tex]

[tex] = 2 \times \frac{22}{ \cancel{7}} \times \cancel{14}[/tex]

[tex] = 2 \times 22 \times 7[/tex]

[tex] = 44 \times 7[/tex]

[tex] \mathfrak{= 308 \: cm}[/tex]