Can somebody please tell me that what is fustrum in mathematics ?

Question

also please tell me how to calculate its area , laterl surface area and volume !

Answer 1

Frustum of a Cone or Pyramid:

A truncated cone or pyramid in which the plane cutting off the apex is parallel to the base.
To calculate its area , laterl surface area and volume , PL. click:
http://www.mathwords.com/f/frustum.htm
http://www.gomath.com/geometry/frustcone.php
http://mathworld.wolfram.com/PyramidalFrustum.html
http://mathworld.wolfram.com/ConicalFrustum.html
http://en.wikipedia.org/wiki/Frustum

Frustum - a truncated cone or pyramid; the part that is left when a cone or pyramid is cut by a plane parallel to the base and the apical part is removed:

solid - a three-dimensional shape.
truncated pyramid - a frustum formed from a pyramid.
truncated cone - a frustum formed from a cone.

Answer 2

Frustum of a Cone or Pyramid

A truncated cone or pyramid in which the plane cutting off the apex is parallel to the base.

Note: the word is frustum, not frustrum.

Answer 3

Frustum is in bucket shape.
L.S.A=pi*slant height*(R+r)
slant height = h^2(R-r)^2(whole root)
R=radius of lower end,r=radius of upper end
Volume=1/3*pi*h*(R^2+r^2+Rr)
simple way to learn is,remember for cone,and replace one r wid r1 & r2.

Answer 4

http://www.calstatela.edu/faculty/hmendel/Classwork/Phil380/08Moscow%20Papyrus.pdf
The truncated pyramid is called fustrum. go thru the above site.... hope it helps!

Answer 5

merry christmas !!!