COURSE:LOGICAL REASONING LESSON : CUBES Presented By: Chaitanya

About Me . MBA from IIMA Electronics and Software Engineer - 2Years Teaching Experience : 3 Years Course Fees: CONTRIBUTE Follow me on Unacademy: https://unacademy.in/user/chaitanyaunacademy Electronics and Communication Engineer httpslunacademy.inuserchaitanyaunacademy

Types of Questions Cuts and Identical pieces Volume = a3 Surface Area = 6a2 1 Cut Maximum Identical Pieces-2 2 Cuts Minimum Identical pieces = 3 Maximum Identical pieces 4 Edge-12 Logic: | | Cuts can be made in 1 direction only Minimum | Vertex = 8 identical pieces Always 1 more than the number of cuts made Cuts made along the length, breadth and height Maximum pieces Face 6

Cuts made along L = a Cuts made along B b Cuts made along H = c Volume = a3 Surface Area = 6a2 Pieces along L = a+1 Pieces along B b+1 Pieces along H = c+1 Edge-12 Formula Maximum number of identical pieces- (a+1)(b+1)(c+1) Vertex = 8 Example If you make15 cuts on a cube, find the maximum number of identical pieces Distribution of cuts = (5,5,5) Max no. of identical pieces = (5+1)(5+1)(5+1) = 216 Face 6

16 cuts Distribution = (5,5,6) Max identical pieces (5+1) (5+1)(6+1) =252 Reverse Concept (Pieces given,find cuts Pieces = P Find factors of P *The deviation between the factors should be minimum P-a*b* Formula Minimum Cuts-(a-1)+(b-1)+(c-1) Volume = a3 Surface Area 6a2 Edge-12 Vertex = 8 Eq Pieces required = 100 100= 5*5*4 Cuts along length = 5-1-4 Cuts along breadth = 5-1-4 Cuts along height = 4-1-3 Minimum no of cuts = 4+4+3 = 11 Face=6

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Chaitanya K

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Rinku sinha

8 months ago

z me galat btaya gya hai

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John Himani

a year ago

I am watching this lesson on windows 10 laptop and I can not see contribute button. I can see "follow" and "save". but no contribute button, kindly help me out.

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Dhananjay Shrivastav

a year ago

do you have a cat?

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Abbaraju Vishnu Prasad

2 years ago

It's formulating everything.Please give elaborative explanation.

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Vivek Ranjan

3 years ago

Great Video Sir........keep going......

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Vishal Gupta

3 years ago

wow! so helpful!

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