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with a tape measure
To calculate the area of a rectangle, you multiply the length times the width. To calculate the area of a square, you multiply one side times another side. To calculate the area of a circle, you multiply the diameter times pi (that's 3.1416). To calculate the area of a triangle, you multiply the height times the base, and divide by 2.
Wiki User
∙ 12y ago
Wiki User
∙ 9y agoThe equation for surface area of a square or rectangle is length times width. The equation for surface area of a triangle is base times height, divided by 2. The equation for surface area of a circle is pi times the square of the radius.
Wiki User
∙ 12y agoThere are different formulae for different shapes. For example, for a rectangle, just multiply length x width, for a triangle, multiply (1/2) x base x height, and for a circle, multiply pi x radius2.
Wiki User
∙ 15y agojust take the length of a side and multiply it by itself.. that is the area
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What can change the surface area to volume ratio?
Yes. There are ways to do that, but it depends on what you wish to change the surface area of. Changing the surface area of something like, say, a shotput is difficult, but changing the surface area of a balloon can be accomplished by merely blowing it up (more) or deflating it.
Why does crushing help a solid solute dissolve?
The rate of dissolution of a solid is dependent on the surface area reaction. By crushing the cube, the surface area is greatly increased, thus increasing the rate of dissolution.
How does a large surface area help the function of a system?
A surface is where things happen between what is on one side of the surface and the other. Thus in general if you want more of these happenings (eg gas exchange) you need the biggest possible surface area. If however you want to minimise these happenings (eg heat loss) you try and reduce the surface area.
Why fins are provided on heat transferring surfaces?
Using fins increases the surface area of the cover plate and more is the surface area meaning more place for heat dissipation or heat exchange. In simple words it multiplies the cooling effect.
How does an increase in surface area help a solute dissolve more quickly?
Not necessarily just changing the surface area causes the rate to change. Changing the ratio of surface area volume changes the rate at which a solute dissolves in a solvent. If the surface area is larger and the volume of a solute is smaller or the same, then the rate at which the solute dissolves in a solvent increases. If the surface area is smaller and the volume of the solute is larger or the same, then the rate at which the solute dissolves in a solvent decreases.
What is the equation for the surface area of a sphere?
Surface area of a sphere with radius r = 4(pi)r2
Formula for area of a sphere?
There is NO equation for the area of a sphere Assuming you mean surface area, the surface area of a sphere of radius r is 4πr^2.
Where might one find the mathematical equation for the surface area of a sphere?
One might find the mathematical equation for the surface area of a sphere in a mathematics textbook. One might also find the equation at online math study groups.
Equation for surface area of a sphere?
4 pi r 2
What is the equation Area length X width used for?
the equations tell you what the surface area of somthing is
What is the equation area equals length multiplied by width used for?
The answer is in the question "area = length multiplied by width" the equation tells you what the surface area of something (eg a football pitch) is.
How do you find the surface area of a cylinder if you only have the height and volume?
use algebra to find the radius, then plug the height and radius into the surface area equation
What is the equation for the total surface area of a pyramid?
s+s+s+s+b=area of pyramid
What is the radius of a sphere that has a surface area of 1742400 squre ft?
Finding the radius of a Sphere by using the surface area is a multi-step mathematical equation. The radius (r) of a sphere with a surface area of 1742400ft is 372.365ft.
How do you find the surface area of a hemisphere?
The surface area of a sphere is 4 π r2. Since a hemisphere is half of a sphere, the equation will be 2 π r2.
How do I find the radius of a cylinder with the height and the surface area?
Surface Area = pi*r*(r + h) When you substitute for pi and h you will get a quadratic equation in r.
What is the formula to find the area of pyramid?
It has to do with the surface area formula: To find the total surface area of a pyramid, use this equation: Surface Area = B + 1/2 * P * s B = base area P = perimeter of the base s = slant height To find the volume of a Pyramid, substitute into this equation: V=1/3Bh B=base area h=height of pyramid
