Question

Q (6/20) Lanjut.

Diketahui :
- sebuah bola berbentuk lingkaran
- Diameter = 28 cm

Ditanya ;
- Keliling
- Luas​

Answer 1

Penjelasan dengan langkah-langkah:

Diameter bola (d) = 28 cm

jari-jari (r) = d ÷ 2 = 28 cm ÷ 2 = 14 cm

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Keliling:

K = π × d

K = ²²/7 × 28 cm

K = 22 × 4 cm

K = 88 cm

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Luas:

L = π × r × r

L = ²²/7 × 14 cm × 14 cm

L = 22 × 2 cm × 14 cm

L = 44 cm × 14 cm

L = 616 cm²

Answer 2

SOAL Q.

r = ½ × d

r = ½ × 28

r = 14 cm

K = 2 × π × r

K = 2 × 22/7 × 14

K = 2 × 44

K = 88 cm

L = π × r²

L = 22/7 × 14²

L = 22/7 × 196

L = 616 cm²

I Hope This Help!