Nhaah.... Tolong jawab ni Soal plissTwT

Nhaah…. Tolong jawab ni Soal plissTwT

Jawaban:

$k = 2 times pi times r = 2 times frac{22}{7} times 21 = 132cm \ \ l = pi times {r}^{2} = frac{22}{7} times {21}^{2} = frac{22}{7} times 441 = 1386 {cm}^{2}$

Jawaban:

a. 132 cm

b.1386 cm²

Penjelasan dengan langkah-langkah:

a.Keliling lingkaran = d × π

= 21 × 2 × π

= 42 × 22/7

= 132 cm

b. Luas lingkaran = r² × π

= 21 × 21 × 22/7

= 1386 cm²

Semoga membantu