Question

how many marbels are there in a column if Navya arranged all the marble​

Answer 1

Answer:

Answer

In order to accomodate maximum number of spheres, there should be hcp (hexagonal closed packing).

Area of square having spherical marbles =16 cm

2

Maximum number of spheres =14(full)+8(half)

Number of spheres =18

Per unit area (per cm

2

)=

16

18

=1.125

Length PQ of square =4 cm

Length PR=5+4×5

3

=40 mm=4 cm

CD=10sin60

∘

=

2

10

3

=5

3

.

solution