NeoPets Riddles (Lenny Conundrums) and Answers Here

w00t Gibb0n
Hmm hey i think i found the answer.
Cerrect me if i go wrong somewhere....

I used excel to work it out so there's no real easy way to explain.
I made a list of numbers from 100 down to 1 in the first column to represent the number of bricks along one side of the pyramid on each layer.
Then i made the next column the previous numbers multiplied by four to represent the number of brick side faces that require paint from each layer of the pyramid.
Then i found the sum of all of the numbers from the second column to represent the total number of side faces (97*63 in size) that were to be painted.
The sum being 20200 faces was then multipied by the surface area in cm
20200*97*63 = 123442200 cm squared
I then made a third column which was the numbers in column 2 minus 4 from each to account for the fact that there is only one top face (97*97 in size) in each corner instead of 2 side faces (1 surface less from each corner and there's 4 corners). Then divided by two because each layer covers half of the surface area of the top faces of the layer below it. With the exception of the top layer being one full top surface.
The sum of these is the total number of top faces requiring paint.
The sum being 9901 surfaces was then multiplied by the surface area in cm
9901*97*97 = 93158509 cm squared

Now knowing these 2 figures we could add them together to find the total surface area needed to be covered by the paint.
123442200 + 93158509 = 216600709cm squared
Then divide this figure by 100 to find the total surface area in meters squared.
216600709/100 = 2166007.09m squared
Then this figure divided by 3 would give us the total number of liters of paint required to paint the surface of the pyramid.
2166007.09/3 = 722002.36 liters

rounded up because it says to do so = 722003 Liters

Here's the Excel File ---> Here <---

Couple of mistakes there I'm afraid insainiac7 , the answer's been posted already two pages back.

You got the side faces correct, however you tried to get a bit too complicated for the top faces, as said previously, all you need do is imagine looking straight down on top of the pyramid, all you see is in effect the bottom layer of 100x100 blocks. Also to get from cm^2 to m^2 you need to divide by 10,000 (100x100) and not just 100.

Okayy. I did a bunch of calculations and stuff and I came up with 7252 litres.

Is that the right answer? I want to make sure before I submit it.

i suck

*slaps self with large trout*

Hmm
I was doin the figures and got 7252, like the bone head I am, I only put 7252. Do you guys think I'll get it wrong for not putting 'liters'?

I would have thought that will be ok (well I hope so because I did the same!). It is (imho) a perfectly acceptable way of answering the question "how many litres are required" with just a number... We'll see I suppose!

Also you'd hope they accept litres as well as liters in the answer given the different british and american spellings!

Does that mean that I got the right answer?

7252?

It's 7251!!! When rounding to the nearest litre 7251.07.....(whatever) it would be 7251 not 7252...what do you guys think???

Edit: or when rounding up would that mean it's 7252? SOrry didn't see that part...is that right should I submit that number?

If you were doing a "rounding" problem in a math class, that would be correct. But you're doing an applied problem. If you need 7251 liters of paint, and then a little bit more, but you rounded down, where are you going to get that little bit more? You have to round up, taking another liter of paint (and having most of the can left over to rust in your garage), to get what you need.

Eliz.

They basically do a keyword search for answers--7252 would be the functional answer, but they say to improve your chances to use keywords also--like 7252 liters, not 72520 centiliters, for instance [I think those are technically the same, but I forget units of liquid measurement... same point, however]. I don't know what they do for British/American spellings, but they tend to use the British more often than not [e.g. colours instead of colors].

When in doubt, use the spelling from the problem!

did anyone win yet?

big win!!!
yep...got 871np, trophy, avatar and the scroll...just traded the scroll for a whole, whole bunch....great prize.

I didnt get anything and I put the right answer. boo.

Dear Jen Aside, Congratulations! You have guessed correctly in the Lenny Conundrum game (round 132). You have won 871 NP and if you are one of the first 250 to win, been awarded a Pyramid Painting Vol. 7: Faux Finishes, avatar, and trophy! Yours Sincerely, The Neopets Team! Web : http://www.neopets.com Dont forget to tell your friends about us - send them a greeting at http://www.neopets.com/sendgreeting.phtml.

How vague... "if you are one of the first"

I got the prize, though... how about that It's too bad I might need it for the plot--I want to keep it for my gallery and I don't want to pay the asking price for someone else's...

So, what was the winning answer?

answer
the answer was 7252,,i got the neomail sayin i won,,but i didnt get the trophy and stuff yet

I finally got the avatar! So excited.

New conundrum up...

Shortly after the Scroll Repository pyramid was completed (see the previous Lenny Conundrum), a huge sandstorm swept through the Lost Desert, partially burying the pyramid. In fact, exactly 58% of the surface area of the freshly-painted pyramid was obscured by sand.


How deep, in meters, was the sand that buried the pyramid? Please round to the nearest one-hundredth of a meter. Assume the surface of the sand around the pyramid is perfectly level.

yep
yep i did some calculations but not sure

My excell sheet is at home, it would make this so much easier!

Well if the total surface is 21753.22
12616.8676 is the surface that was covered in sand.

I'm confused though, it says that 58% of the TOTAL surface is covered, that includes the tops i'm assuming. So i guess we have to calculate how many layers are covered including their respective tops?

I need more time on this.

I did, too. I dont understand why we didn't get anything. I am CERTAIN that I put the right answer, too. That makes me sad.