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Right Cone

  • coneRight cone (a three-dimensional figure) has a circle base with the apex alligned at 90° above the center of the base.
  • 1 base

 

Height of a Right Cone formula

\( h \;=\; 3 \cdot \dfrac{ V }{ \pi \cdot r^2 } \) 
Symbol English Metric
\( h \) = height \( in \) \( mm \)
\( r \) = radius \( in \) \( mm \)
\( V \) = volume \( in^3 \) \( mm^3 \)

 

Slant Height of a Right Cone formula

\( s \;=\; \sqrt{ r^2 + h^2 }\) 
Symbol English Metric
\( s \) = slant height \( in \) \( mm \)
\( A \) = area \( in^2 \) \( mm^2 \)
\( h \) = height \( in \) \( mm \)
\( r \) = radius \( in \) \( mm \)

 

Surface Area of a Right Cone formula

\( A_s \;=\;   \pi \cdot r \cdot \left( r + \sqrt{ h^2 + r^2 } \right) \) 
Symbol English Metric
\( A_s \) = surface area \( in^2 \) \( mm^2 \)
\( h \) = height \( in \) \( mm \)
\( \pi \) = Pi  \(3.141 592 653 ...\)  \(3.141 592 653 ...\)
\( r \) = radius \( in \) \( mm \)

 

Volume of a Right Cone formulas

\( V = \dfrac {1}{3} \cdot \pi \cdot r^2 \) 

\( V = \cfrac {1}{3} \cdot b \cdot h \) 

Symbol English Metric
\( V \) = volume \( in^3 \) \( mm^3 \)
\( b \) = base area \( in^2 \) \( mm^2 \)
\( h \) = height \( in \) \( mm \)
\( \pi \) = Pi  \(3.141 592 653 ...\)  \(3.141 592 653 ...\)
\( r \) = radius \( in \) \( mm \)

 

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