Question

hitunglah keliling lingkaran jika
1.d=42
2.r=35
3.r=20
4.d=30

tolong ya di jawab
jangan ngasal​

Answer 1

Satu

K = π × d

K = 22/7 × 42

K = 22 × 6

K = 132

Dua

K = π × 2r

K = 22/7 × 2(35)

K = 22/7 × 70

K = 22 × 35

K = 770

Tiga

K = π × 2r

K = 31,4 × 2(20)

K = 3,14 × 40

K = 125,6

Empat

K = π × d

K = 3,14 × 30

K = 94,2