Bantuin ya kak besok dikumpulin pliss!!!!!!!!!!!!!!!!!!!!!!!​

3. K = 2 × π × r

K = 2 × 3,14 × 15

K = 94,2 cm

4. K = π × d

K = 22/7 × d

44 = 22/7 × d

d = 44 × 7/22

d = 14 cm

5. K = π × d

K = 22/7 × d

308 = 22/7 × d

d = 308 ÷ 7/22

d = 98 ÷ 2

r = 49 cm

Jawab:

4.π x d = keliling

²²/₇ x d = 44

d = 44 : ²²/₇

d = 44 x ⁷/₂₂

d = 2 x 7

d = 14 cm

5. Kel = 2πr

2πr = 308

2 . 22/7 . r = 308

44/7 . r = 308

r = 308 . 7/44

r = 49 cm

Penjelasan: maaf kalo salah