Jari jari suatu kerucut 8cm garis pelukisnya 17 cm berapa cm³ volume kerucut tersebutt
Jawaban:
~Bangun ruang
t^2 = s^2 – r^2
= 17^2 – 8^2
= 289 – 64
= 225
= √225
= 15 cm
V = 1/3 × π × r × r × t
= 1/3 × 3,14 × 8 × 8 × 15
= 1/3 × 3.014,4
= 3.014,4/3
= 1.004,8 cm^3
Tinggi Kerucut
T² = S² – R²
= 17² – 8²
= 289 – 64
= √225
= 15 Cm
Volume Kerucut
= ⅓πr²t
= ⅓ × 3,14 × 8² × 15
= 1 × 3,14 × 64 × 5
= 3,14 × 320
= 1.004,8 Cm³.
~Opung~