Question

sya minta tolong kak,, soal nya besok senin dikumpul jngn ngasal ya (NGASAL REPORT)




PKE CARA
jngn ambil poin doang ya^^ ​

Answer 1

Verified answer

1. A. d = 2×r = 2×14 = 28 Cm

K = π×d = 22/7×28 = 22×4 = 88 Cm²

B. d = 2×r = 2×28 = 56 Cm

K = π×d = 22/7×56 = 22×8 = 176 Cm²

C. d = 2×r = 2×30 = 60 Cm

K = π×d = 3,14×60 = 188,4 Cm²

D. d = 2×r = 2×40 = 80 Cm

K = π×d = 3,14×80 = 251,2 Cm²

2. Bagian A

K = 2×π×r

12,56 = 2×3,14×r

12,56 = 6,28×r

r = 12,56/6,28

r = 2 Cm

Bagian B

K = 2×π×r

62,8 = 2×3,14×r

62,8 = 6,28×r

r = 62,8/6,28

r = 10 Cm

Bagian C

K = 2×π×r

88 = 2×22/7×r

88 = 44/7×r

r = 88×44/7

r = 14 Cm

Bagian D

K = 2×π×r

176 = 2×22/7×r

176 = 44/7×r

r = 176×44/7

r = 28 Cm

3. a d = 2×r = 2×50 = 100 Cm

b. π×d = 3,14×100 = 314 Cm²

4. K = π×d = 22/7×70 = 22×10 = 220 Cm²

5. K = 2×π×r

198 = 2×22/7×r

198 = 44/7×r

r = 198×44/7

r = 31,5 Cm

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