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Two cubes each of volume 64 …

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Two cubes each of volume 64 cm cube has joined end to end find the surface area of the resulting cuboid

Posted by Dev Raj 6 years, 10 months ago

CBSE > Class 10 > Mathematics

6 answers

Hema Pandey 6 years, 10 months ago

Sry side of cube is 4 and in the first line There is full stop after first 64

Hema Pandey 6 years, 10 months ago

Volume of cube(a×a×a)=64 64 is cube of 4 . hence side of cube is 8. On joining the cube the height and breadth remain same but length become twice. Measurements of resulting cuboid are L=8 B=4 H=4 Now using,TSA of cuboid put value of l,b,h in formula u get ur answer

Hema Pandey 6 years, 10 months ago

Your right answer is

Hema Pandey 6 years, 10 months ago

Sry I read the wrong question

Hema Pandey 6 years, 10 months ago

Sry L=126

Hema Pandey 6 years, 10 months ago

On joining the cubes the resulting cuboid have same breadth and height but length become twice. So measurements of sides of resulting cuboid are L=123 B=63 H=63 Now, using TSA of cuboid you will get your answer

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