Question

A bead seller arranged some beads in multi-layer box. The first layer of the box was square shaped with 4 rows and 6 columns. Each layer was 1 less in each dimension of the previous layer. What will be the maximum number of beads that could have been in the third layer from the first? 4 8 12 24 None of the above​

Answer 1

Step-by-step explanation:

Correct option is B)

Given that C

1

:C

2

=4:9⇒2πr

1

:2πr

2

=4:9⇒r

1

:r

2

=4:9

We have

A

2

A

1

=

πr

2

2

πr

1

2

=

9

2

4

2

=

81

16

∴A

1

;A

2

=16:81