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It varies by the shape. Anything sort of circular usually involves equations with Pi, but objects with corners are different. Since Fixya will not allow me to type equations very well here, I'll refer you to

http://www.cliffsnotes.com/math/geometry/perimeter-and-area/formulas-perimeter-circumference-area

http://www.coolmath.com/reference/perimeters.html

http://www.mathsisfun.com/geometry/ellipse-perimeter.html

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

http://www.cliffsnotes.com/math/geometry/perimeter-and-area/formulas-perimeter-circumference-area

http://www.coolmath.com/reference/perimeters.html

http://www.mathsisfun.com/geometry/ellipse-perimeter.html

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

Oct 12, 2014 | Mathsoft StudyWorks! Middle School Deluxe...

Assuming the base of the pyramid is square ... of length B and the distance from the center of the base of the pyramid to the top of the pyramid is H

Surface area is: 2 x H x B

plus B-square (if you include the base of the pyramid)

Surface area is: 2 x H x B

plus B-square (if you include the base of the pyramid)

May 23, 2014 | Encore Math Advantage Algebra II and...

See captured images below

Apr 15, 2014 | Texas Instruments TI-89 Calculator

If the solid has some regularity you may be able to use a formula to calculate its volume. Consult a geometry book to find the formula that apply to your solid.

Feb 25, 2014 | Office Equipment & Supplies

Baby food is any that presents itself or is made into a soft, easily consumed form. It can be the same food that the rest of the family is eating, but mashed or minced really small, or food products purchasable in stores, made specifically for babies.

Jul 04, 2013 | Baby Care

Here are the Perimeters of Geometry: http://www.coolmath.com/reference/perimeters.html

Here are circumference formulas: http://math.about.com/library/blcirclecalculator.htm

Here are circumference formulas: http://math.about.com/library/blcirclecalculator.htm

Sep 06, 2011 | Computers & Internet

Surface area of any prism is the sum of the areas of the sides

A trapezium is A = h(a + b)/2

h is the perpendicular height, a and b are the parallel sides

A trapezium is A = h(a + b)/2

h is the perpendicular height, a and b are the parallel sides

Aug 10, 2011 | Encore Math Advantage Algebra II and...

There isn't a single formula for solids of different shapes.
For a right solid with a rectangular base - volume is base area x height
Similarly for cylinder with a circular base - volume = base area x height (base area in this case is Pi x radius2).
For a sphere - volume = 4/3 x Pi x radius3

Jul 07, 2011 | Computers & Internet

Hi, Babies who are taking to solids normally should not be on formula after a year. The nurses were right, but I understand your anxiety in trusting them. I am however, a mother of almost 10 babies! No one stayed on formula past a year. My paternal grandmother (retired dir. of nursing) and my maternal grandmother(greatest mother on earth) agree! You may want to start week by week adding 2oz of cow or almond milk (whatever you drink-just not skim) to the formula she is already drinking just to keep an eye on allergies and to ease her little belly into reg. milk until she is taking 100% milk.

Feb 11, 2011 | Nestle Good Start Gentle Plus Infant...

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