# Volumes and areas of body surfaces

*Volumes and areas of body surfaces: prism, parallelepiped, right*

prism, right-angled parallelepiped, cube, pyramid, regular pyramid,

truncated pyramid, regular truncated pyramid, circular cylinder,

round cylinder, circular cone, round cone, truncated circular cone,

truncated round cone, sphere (ball), hemisphere, spherical segment,

spherical layer, spherical sector, hollow ball.

prism, right-angled parallelepiped, cube, pyramid, regular pyramid,

truncated pyramid, regular truncated pyramid, circular cylinder,

round cylinder, circular cone, round cone, truncated circular cone,

truncated round cone, sphere (ball), hemisphere, spherical segment,

spherical layer, spherical sector, hollow ball.

*Designations:** V – a volume; S – a base area; S _{lat} – a lateral surface area;*

*P – a full surface area; h – a height; a, b, c – dimensions of a right angled*

*parallelepiped;*

A – an apothem of a regular pyramid and a regular truncated

A – an apothem of a regular pyramid and a regular truncated

*pyramid; L – a generatrix of a cone; p –*

a perimeter or a circumference of

a perimeter or a circumference of

*a base; r – a radius of a base; d – a diameter of a base; R – a radius of a ball;*

*D – a diameter of a ball; indices 1 and 2 are related to radii, diameters,*

*perimeters and areas of upper and lower bases of truncated prism and pyramid.*

*A prism *( right and oblique ) *and a parallelepiped:*

*A right prism:*

_{lat}= ph .

*A right angled parallelepiped:*

*V = abc ; P =*2

*( ab + bc + ac ) .*

*A cube: *

*V = a*³

*; P =*6

*a*²

*.*

*A pyramid * ( regular and irregular ) *:*

*A regular pyramid:*

*A truncated pyramid* ( regular and irregular ) *:*

*A regular truncated pyramid:*

*A circular cylinder* ( right and oblique )*:*

*A round cylinder :*

*A circular cone *( round and oblique)*: *

*A round cone:*

*A truncated circular cone *( round and oblique )*:*

*A truncated round cone:*

*A sphere ( ball ):*

*A hemisphere:*

*A spherical segment:*

*A spherical layer:*

*A spherical sector:*

_

here* h – *a height of a segment, contained in the sector*.*

*A hollow ball:*

here* R*_{1} , *R*_{2}

, *D*_{1} , *D*_{2} *– *radii and diameters

of external and internal spherical surfaces correspondingly.