Dalam geometri, kerucut tu sabua limas spesial yang baralas lingkaran. Kerucut pu 2 sisi, 1 rusuk, dan 1 titik sudut.
L = π r 2 {\displaystyle L=\pi r^{2}}
L = π r s {\displaystyle L=\pi rs}
L = Luas Alas + Luas Selimut {\displaystyle L={\text{Luas Alas}}+{\text{Luas Selimut}}}
= π r 2 + π r s {\displaystyle =\pi r^{2}+\pi rs} , atau
= π r ⋅ ( r + s ) {\displaystyle =\pi r\cdot (r+s)}
V = 1 3 ⋅ π r 2 ⋅ t {\displaystyle V={\frac {1}{3}}\cdot \pi r^{2}\cdot t}
V = ∫ x 2 d x = 1 3 x 3 . {\displaystyle V=\int x^{2}dx={\tfrac {1}{3}}x^{3}.}
Kerucut.
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