Re: Maths- Gym for Brainiacs

by Babun Wed Feb 22, 2012 7:12 pm

Next question

topic: basic geometry
difficulty: easy
requirements: junior high level

Is it possible to calculate the pink area and if yeah, how much is it? eco smile

by halamadrid2 Wed Feb 22, 2012 7:45 pm

Immortal Babun wrote:Next question

topic: basic geometry
difficulty: easy
requirements: junior high level

Is it possible to calculate the pink area and if yeah, how much is it?

15??

by Babun Wed Feb 22, 2012 8:31 pm

by RealGunner Wed Feb 22, 2012 11:10 pm

by kiranr Thu Feb 23, 2012 1:29 am

Immortal Babun wrote:Next question

topic: basic geometry
difficulty: easy
requirements: junior high level

Is it possible to calculate the pink area and if yeah, how much is it?

Is it 7?

by Babun Thu Feb 23, 2012 7:48 am

All answers are wrong Very Happy

by kiranr Thu Feb 23, 2012 8:34 am

If that figure is 2-d, then it should be 9.

by Babun Thu Feb 23, 2012 9:05 am

It is two dimensional eco smile

How did you come up with the solution kiranr?

by spanky Thu Feb 23, 2012 9:06 am

its 11

by Babun Thu Feb 23, 2012 9:12 am

spanky489 wrote:its 11

It's 9 like kiranr said but he didn't say why Very Happy

by spanky Thu Feb 23, 2012 9:15 am

Immortal Babun wrote:
spanky489 wrote:its 11
It's 9 like kiranr said but he didn't say why

by beatrixasdfghjk. Thu Feb 23, 2012 9:17 am

Immortal Babun wrote:It is two dimensional
How did you come up with the solution kiranr?

14+12 is the base*height over two. So seventeen + x is the other half of base*height = 26, x = 9?

by Babun Thu Feb 23, 2012 9:32 am

beatrixasdfghjk. wrote:
Immortal Babun wrote:It is two dimensional
How did you come up with the solution kiranr?
14+12 is the base*height over two. So seventeen + x is the other half of base*height = 26, x = 9?

Awesome job beatrix eco smile

You solved it Very Happy

by beatrixasdfghjk. Thu Feb 23, 2012 9:42 am

Immortal Babun wrote:
beatrixasdfghjk. wrote:
Immortal Babun wrote:It is two dimensional
How did you come up with the solution kiranr?
14+12 is the base*height over two. So seventeen + x is the other half of base*height = 26, x = 9?
Awesome job beatrix You solved it

So I get the brownie point because I had the reasoning and kiranr didn't? Razz

.

by kiranr Thu Feb 23, 2012 9:45 am

2(14+12)/X = Y.

So the are of the rectangle is 52

Subtract the other areas from this.

by Babun Thu Feb 23, 2012 9:51 am

Next MS Paint question, you guys seem to be interested in geometry

topic: geometry
difficulty: hard
requirements: 2nd year of high school

Spanky invented a brand new triangular merry-go-round for a more bumpy feeling in the corners . It's shape is square with the side length of 10m and the moving part itself is an equilateral triangle ( all sides with the same length) with length of 5m
Spanky wants to demonstrate his baby in action therefore he invites Kiranr and Halamadrid2 for a round. Those two take the first two sits ( black dots) and Spanky the last one ( red dot). Each dot is 2/3 height away from the opposite side. The round ends when Spanky ( red dot) returns into his initial postion.
Babun watched those three in their natural environment with a smirk and thought, how much of a way did Spanky travel?

beatrixasdfghjk. wrote:
Immortal Babun wrote:
beatrixasdfghjk. wrote:
Immortal Babun wrote:It is two dimensional
How did you come up with the solution kiranr?
14+12 is the base*height over two. So seventeen + x is the other half of base*height = 26, x = 9?
Awesome job beatrix You solved it
So I get the brownie point because I had the reasoning and kiranr didn't? .

Yeah, without reasoning answers don't make sense. The thread is for everybody to understand, not only for the one who solves it eco smile

kiranr wrote:2(14+12)/X = Y.

So the are of the rectangle is 52

Subtract the other areas from this.

by beatrixasdfghjk. Thu Feb 23, 2012 9:59 am

Don't understand the question Sad

.

by Babun Thu Feb 23, 2012 10:11 am

beatrixasdfghjk. wrote:Don't understand the question .

I added a gif with the movement for the question. Damn, I placed two red dots :facepalm:

Basically, the movement end when the red dot in the left corner takes its position again in the left corner like from the start ( see gif). The question is , how much of a way did the red dot wander off? eco smile

by beatrixasdfghjk. Thu Feb 23, 2012 10:15 am

So I just have to find the distance the red dot travels?

by Babun Thu Feb 23, 2012 10:29 am

beatrixasdfghjk. wrote:So I just have to find the distance the red dot travels?

by beatrixasdfghjk. Thu Feb 23, 2012 10:46 am

I'm still confused ):

by kiranr Thu Feb 23, 2012 11:03 am

Is the answer approximately 25?

by Babun Thu Feb 23, 2012 11:06 am

kiranr wrote:
Is the answer approximately 25?

Read the question again. I think you didn't understand it. The triangle doesn't travel just one round, it travels until the red dot is in the left down corner again Very Happy

by kiranr Thu Feb 23, 2012 11:23 am

Is the answer lesser than 25? around 20?

EDIT: Don't bother, it is likely wrong!

by Babun Fri Feb 24, 2012 10:20 pm

Too hard or not interested? eco smile

by spanky Sun Feb 26, 2012 9:32 pm

Immortal Babun wrote:Too hard or not interested?

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