Question

Tolong jidawab dengan caranya. capat ya...

Answer 1

Verified answer

Diketahui :
- Garis Pelukis = 12 cm

Ditanya : Jari - Jari Alas = ....?

Penyelesaian :
- Luas Selimut Kerucut :
L = 3/4 × π × s × s
L = 3/4 × 3,14 × 12 cm × 12 cm
L = 3/4 × 3,14 × 144 cm²
L = 3/4 × 452,16
L = 339,12 cm²

- Jari - Jari Alas :
L = π × r × s
339,12 = 3,14 × r × 12
339,12 = 37,68r
r = 339,12 ÷ 37,68
r = 9 cm

Jawaban : c. 9 cm

Maaf Kalau Salah