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rectangle, circle,triangle,ring parrallelagram,trapezium.
rectangular prism,cylinder,triangular prism,pipe,sphere,cone and pyramid.

2007-02-11 18:34:17 · 6 answers · asked by mathew t 1 in Science & Mathematics Mathematics

6 answers

The other answers are good, but just for general reference I've found it easier to remember formulas like that just by remembering that areas are almost always something along the lines of "base times height" and volumes are usually similar to "area of base times height".

For what (little) it's worth...

2007-02-11 18:42:51 · answer #1 · answered by Anonymous · 0 0

Area of a rectangle = length x breadth
Area of a circle = pi x r^2 (where pi = 22/7)
Area of a triangle = half (base x height)
Area of a parallelogram = base x height
Area of a trapezium = half the sum of parallel sides x perpendicular distance between the parallel sides

Volume of
rectangular prism (I think u mean rectangular parallelopiped) = length x breadth x height
cylinder = pi x radius^2 x height
triangular prism = base area x height of the prism
pipe = same as cylinder
sphere = (4/3) x pi x radius^3
cone = pi x radius^2 x (height/3)
pyramid = 1/3 x (base area ) x (height)

2007-02-11 18:49:13 · answer #2 · answered by dafauti 3 · 0 0

Here is a website which might help you out:

http://math.about.com/od/geometry/a/perareavolume.htm

You can also do a web search to find formulas for specific geometric shapes and solids. It sometimes takes a little while, but usually one can turn up good results.

2007-02-11 18:50:12 · answer #3 · answered by MathBioMajor 7 · 0 0

do your own homework!
just kidding
some shapes don't have volume, such as planar shapes.
A=area, V=volume, r=radius, l=lenght, h=height, w=width
]Planer Shapes
Rectangle: A=l*w
Cirlce:A =Pi * r^2
Tringle: half base * height
ring parralllelafgram, i am unfamiliar with the shape
trapezium, i forget
i leave the rest to you as homework, cherio

2007-02-11 18:46:53 · answer #4 · answered by Chustar Of Naija 2 · 0 0

I believe the answer can be found in a mathematics textbook.

2007-02-11 18:38:35 · answer #5 · answered by grgoon 2 · 0 0

check these sites out

http://math.about.com/library/blmeasurement.htm

http://math2.org/math/geometry/areasvols.htm

2007-02-11 18:40:43 · answer #6 · answered by CJenks 2 · 0 0

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