Your Questions About Odd Calculator

David asks…

Can someone help me find pictures of this cage?

I wanna see pictures of it in use. I wanna know how big it actually is with stuff inside it and whatnot. The rat cage calculator says it’s big enough for 5 rats… and I find this hard to believe =| especially since it’s so cheap.
I was thinking of returning my new cage for that one since it’s cheaper and supposedly bigger. I have 4 rats, though.

admin answers:

I have to agree with you. I checked the calculator also ( ) which says 4-5 rats (depending on which option you use of 2 cubic feet per rat or 2.5 cubic feet per rat).

My last cage was that size and I had 2 rats in it. I don’t think I’d put more than 3 in it. I would only put as many as 4 in *IF* they had tons of out-of-cage playtime.

You will find a couple of pictures posted by owners at: I have to admit, in that photo with the rat coming out the door, he looks awful small compared to the cage!

If you haven’t already, check out the Customer Reviews on that PetSmart page. I find that website invaluable for those reviews.

From the picture you posted, the wire part of the cage sits right on the BOTTOM of the pan, and I wish all the Super Pet cages did that (that’s the only one that does, I believe). I had my first rats in a SP cage and because I had one of the shelves very low, I didn’t see that they’d chewed a hole out the back!

It IS a good price. You might be able to order extra shelves from SP, if you’re so inclined.

Maria asks…

How good at maths do you have to be to enable yourself to become an airline pilot ?

What sort of stuff do they go into ??

admin answers:

As a retired airline pilot, I can tell you that you don’t need to be a mathematical genius to get your commercial pilot’s licence, but to be accepted as a pilot with a major airline you will almost certainly need an undergraduate degree of some type. The more math, physics, and engineering you have in your educational background, the better your odds of being recruited (and advanced) are than a pilot without the right academic credentials.

While math is not necessary to master the basic hand and foot coordination skills for stick and rudder flying, you better prepare yourself for a lot of studying to learn navigation, weather, air regulations, etc. The major airlines are not going to give you command of a 100 million dollar aircraft with 300 passengers unless you can prove you have the mental capacity to learn all the normal and emergency procedures that the airline will demand of you.

A pilot has to be intelligent but not necessarily intellectual. He/she has to be able to quickly and correctly calculate basic math problems such as cross wind components, fuel burn, and ATC instructions to arrive at a specified altitude – location point with and without a calculator.

Look at it this way – if I were recruiting for a major airline (and I have), and I had a choice of 2 pilots with similar flying experience, I would take the one with the superior educational background, as that way he/she has demonstrated that he/she will have the mental capability to excel at a difficult training program, and will have the demonstrated willpower to succeed. The major airlines are going to hire the best of the best, and not pilots who meet the minimum acceptable standards.

And English is the international standard for aviation communication, so it won’t hurt to be good at that either.

Mandy asks…

Why is y=tanxcotx incorrect when you plug it into a graphing calculator?

It ends up giving a horizontal line at y=1, but I am told to tell why this is actually wrong. Does anybody know?

admin answers:

That’s very odd. Well, it’s my understanding that cotx = 1 / tanx, so it would make sense that the two multiplied would always result in one. However, the function should be undefined at pi and negative pi since it would result in tan(pi) * cot(pi), or 0 * 1 / 0. So in this case, there should asymptotes at those two points, which don’t show up when I plot it. If / when you get an explanation for this I’d very much like to hear it.

Helen asks…

How to plot curve for x^(2/n)+y^(2/n)=a^(2/n) without computer/calculator?

Could someone please help me with this problem and also explain fully and thoroughly in step by step:

n is an odd integer and a is a positiv real number


a) Sketch the curve for n=1,n=3 and n=5

b) Calculate the length of the curve for n=1 and n=3

Thank you!

admin answers:

If n = 1 , then you have the equation of a circle.

If n = 3, 5, then you HAVE TO use a computer to plot the curve.

If n = 1 , then the length of the curve is just the circle perimeter = 2 pi a

If n = 3 , then from the symmetry about the x- and y-axis,

Length = 4 * arc length between x = 0 and x = a , of the function y = ( a^(2/3) – x^(2/3) ) ^(3/2)

The arc length = integral ( from 0, to a, sqrt( 1 + (dy/dx)^2 ) dx )

dy/dx = (3/2) (a^(2/3) – x^(2/3) )^(1/2) (- 2/3) x^(-1/3) = – ( a^(2/3) – x^(2/3) )^(1/2) / x^(1/3)

Therefore, 1 + (dy/dx)^2 = 1 + (a^(2/3) – x^(2/3))/x^(2/3) = a^(2/3) / x^(2/3) = a^(2/3) x^(-2/3)

And sqrt( 1 + (dy/dx)^2 ) = a^(1/3) x^(-1/3)

Hence, its integral is a^(1/3) (3/2) x^(2/3) , evaluated between 0 and a gives

(3/2) a^(1/3) a^(2/3) = (3/2) a

Therefore the length of the curve is 4(3/2 a) = 6 a.

Jenny asks…

How much does it cost for a professional to paint interior walls, per square foot?

Preferably in the state of Connecticut.

admin answers:

Go to and use the calculator, the will even assist you in finding a „professional“ to paint your room or what-ever odd jobs you may have. It’s a pretty good web-sight if you need help in the home-improvement area. Best Of Luck

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