Garis pelukis
s = √(r² + t²)
= √(7² + 12²)
= √(49 + 144)
= √193
≈ 13,892
Luas permukaan kerucut
Lp = πr(r + s)
= 22/7 × 7 × (7 + 13,892)
= 22(20,892)
= 459,624 cm²
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Garis pelukis
s = √(r² + t²)
= √(7² + 12²)
= √(49 + 144)
= √193
≈ 13,892
Luas permukaan kerucut
Lp = πr(r + s)
= 22/7 × 7 × (7 + 13,892)
= 22(20,892)
= 459,624 cm²
Semoga membantu :)