kerucut

Dalam geometri, kerucut adalah sebuah limas istimewa yang beralas lingkaran. Kerucut memiliki 2 sisi dan 1 rusuk.

Sisi tegak kerucut tidak berupa segitiga tapi berupa bidang miring yang disebut selimut kerucut.

Daftar isi

  [sembunyikan] 

• 1Rumus kerucut
  • 1.1Luas alas
  • 1.2Luas selimut
  • 1.3Luas permukaan
  • 1.4Volume
• 2Lihat pula

Rumus kerucut[sunting | sunting sumber]

Luas alas[sunting | sunting sumber]

${\displaystyle L=\pi r^{2}}$

Luas selimut[sunting | sunting sumber]

${\displaystyle L=\pi rs}$

Luas permukaan[sunting | sunting sumber]

${\displaystyle L=\ LuasLingkaran+LuasSelimut}$
    ${\displaystyle =\pi r^{2}+\pi rs}$, atau
    ${\displaystyle =\pi r\cdot (r+s)}$

Volume[sunting | sunting sumber]

${\displaystyle V={\frac {1}{3}}\cdot \pi r^{2}\cdot t}$

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