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1 year ago

Find the least number of cuboids of sides 20 cm 15 cm and 9cm required to make a perfect cube

Mathematics

1 answer:

NikAS [45]1 year ago

4 0

Answer:

<em>No. of cuboids required to form a cube = 2*2*5 = 20 Therefore, 20 cuboids will be required to form a cube.</em>

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$_{n}C_{r} = \dfrac{n!}{(n - r)!r!}$

$_{25}C_{10} = \dfrac{25!}{(25 - 10)!10!}$

$_{25}C_{10} = \dfrac{25 \times 24 \times 23 \times 22 \times 21 \times 20 \times 19 \times 18 \times 17 \times 16 \times 15!}{15! \times 10 \times 9 \times 8 \times 7 \times 6 \times 5 \times 4 \times 3 \times 2 \times 1}$

$_{25}C_{10} = \dfrac{25 \times 24 \times 23 \times 22 \times 21 
\times 20 \times 19 \times 18 \times 17 \times 16}{10 \times 9 \times 8 \times 7 \times 6 \times 5 \times 4 \times 3 
\times 2 \times 1}$

$_{25}C_{10} = \dfrac{23 \times 11 \times 20 \times 19 \times 2 \times 17}{1}$

$_{25}C_{10} = 23 \times 11 \times 20 \times 19 \times 2 \times 17$

$_{25}C_{10} = 3,268,760$

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3 years ago

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3 years ago

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3 years ago

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1 year ago

If a cube has a volume of 512, the perimeter of one face of the cube is A) 4 B) 8 C) 12 D) 32

Svet_ta [14]

Answer:

The answe is 32!!!!!

Step-by-step explanation:

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2 years ago

Find the least number of cuboids of sides 20 cm 15 cm and 9cm required to make a perfect cube​

Find the least number of cuboids of sides 20 cm 15 cm and 9cm required to make a perfect cube