Area List

How many areas of study can I choose on a collage ?

admin — Sat, 12 May 2012 16:36:15 +0000

I wanna study at New York University.
I wanna study advertisement, design, marketing and management. But these are divided into different areas of concentration and I really dunno how it works. Can you please tell me, how can I ‘ get into’ these four areas ? Is it possible ?
Thanks

It’s spelled ‘college’. By the way, ‘wanna’ and ‘dunno’ are words.

What are some good mountains to hike in the Phoenix area?

admin — Sun, 26 Feb 2012 05:34:28 +0000

I’m looking for a fairly easy mountain to hike. Also, one that isn’t too small or too big.
Thanks!

That 1 is easy climb A mountain @ ASU (BUT be careful of the college students they might try to take you out) wink wink ‘). Or Papago Park or Sunnyslope S mountain those are the easy ones. When your ready for more of a challenge call me and we could venture out to the Superstition.fyi. Camelback Mt is a residental area and its not good to park there.Or maybe even T Mt by Thunderbird & 19th where do you live? Theres Lil mountains all over the city.

Evaluate the integral by using area formulas from geometry?

admin — Mon, 13 Feb 2012 02:13:48 +0000

integral from 1/2 to 1 of √(1-(x^2))

i can’t figure this one out.
i would like to avoid plotting but yes this is the way i am asked to do this. otherwise i know how to do it

You cannot integrate by power rule. You would have to use trig substitution.

However, what the teacher wants is for you to graph it.
This is the top half of the circle, x^2+y^2=1
This circle has center at the origin and radius =1

Then find the area of the strip from x= 1/2 to x=1

Draw a radius from (0,0) to (1/2, sqr3/2)
Between this radius and the x axis is a sector, with angle=60 degrees (special triangle formula)
Area(sector) = (m/360)(pi* r^2)= pi/6

Now the region from 0 to 1/2 is a right triangle with area = (1/2)(1/2)(sqr(3)/2= sqr(3)/8

So area from 0 to 1/2 is [pi/6 - sqr(3)/8]

You get the same answer if you integrate by trig subst.

Hoping this helps!

In Alaska, is there an area that is near a lot of water, that is also surrounded by forests and mountains?

admin — Wed, 08 Feb 2012 05:10:23 +0000

Writing a book and need a geographical area that fits this criteria. Thanks! Has to be A LOT of water, that could freeze over in the winter.

Try Sitka in Alaska. It’s near Fireweed and Arrowhead Mountain, and is facing Pacific ocean.

How do you find the height of a triangle using the area formula?

admin — Fri, 03 Feb 2012 07:36:48 +0000

I know what the end product is, h = A x .5b , but how do you get to it?

Sadly, no, your end product is wrong.
Here’s how to get the right answer from the formula A= 1/2 * b * h

divide both sides by b ( base length)

A / b = 1/2 * h

finally multiply both sides by 2

2 * A / b = h

h = 2A/b

What is the difference between a conformal map and an equal area map?

admin — Tue, 24 Jan 2012 10:40:51 +0000

What is the difference between a conformal map and an equal area map?

The Earth is a sphere, while a map is flat. Making a map will therefore introduce distortions, but the map maker can choose the kind of distortion.

In conformal maps and equal area maps the distortion is chosen differently. In a conformal map the angles are preserved, meaning that the shapes are conform to reality.

In equal area maps the areas are preserved, meaning that if one country is twice as big as another, then it will also appear twice as big on the map.

What is the Surface Area Formula of a 3 Dimensional Rectangle?

admin — Tue, 17 Jan 2012 03:47:49 +0000

I need this for a Larger Problem, but I forgot what this is. The problem is easy if I have this Formula. Can someone give it to me?

It is the sum of all its faces area , and since you have rectangle , there are 6 faces
just simply compute them and add them up
and if you want a formula , then lets assume the dimensions are X , Y and Z
A= 2xy + 2xz + 2zy

How do you find the area of triangle?

admin — Tue, 10 Jan 2012 01:34:30 +0000

I know area of a triangle equals 1/2 base*height. But is is, Base times Heighf FIRST, then halve it, or is it half of the base first, then times the height?

That statement was a bit confusing, so here’s a second one in case you don’t understand the first one:
When finding the area of a triangle, do we divide the product of the base and height FIRST? Or do we calculate half of the base first, then multiply it by the height?

Thanks in advanced!

It doesn’t matter what you do first. You can multiply in any order. For instance, let’s say our base is 5 and our height is 2. Let’s look at it done every way:

5×2= 10
10x (1/2)= 5

2x (1/2)= 1
1×5= 5

5x (1/2)= 2.5
2.5 x 2= 5

Regardless of what you multiply first, you will always end up with 5.

How to derive the formula area of triangle=(1/2)bh?

admin — Tue, 03 Jan 2012 06:04:47 +0000

It don’t want a derivation related to rectangle or parllelogram because its the most basic formula and even the area of rectangle was derived from this formula. So I want a real basic derivation.

It can be derived using integration

consider a line of length dl and having a small thickness dx

the triangle can be assumed to be made from n lines of variable length and thickness dx

since the area covered by line is infinitesimally small it can be assumed as small rectangle having length dl and breadth dx

now area of line = dl.dx

now area of triangle= (within limits 0 to l for dl) and (within limits 0 to h for dx) integration dl.dx

i was able to imagine upto this… this will give u the hint…

Is there any site where I can find proofs of various polygon area formulas?

admin — Tue, 27 Dec 2011 07:32:46 +0000

Like triangle, parallelogram etc. It would be good if everything was on the same page

Wikipedia usually explains how the formulae are achieved. I haven’t searched much.

I mean some are obvious: triangle, rectangle/parallelogram, regular penta/hexa/octogon.