Question

answer the 2 question plz correctly

Answer 1

(5) 

Let the common ratio be x.

Given the length of a cuboid = 4x.

Given breadth of the cuboid = 2x.

Given the height of the cuboid = x.

Given surface area of cuboid = 1372cm^2.

We know that surface area of cuboid = 2(lb + bh + lh)

1372 = 2(4x * 2x + 2x * x + x * 4x)

1372 = 2(8x^2 + 2x^2 + 4x^2)

1372 = 2(14x^2)

1372 = 28x^2

x^2 = 1372/28

x^2 = 49

x = 7cm.


Therefore the length = 4 * 7

                                    = 28cm.



(6)

Given that the bag contains slip from 3 and 32.

The total number of slips n(S) = 30

Multiple of 4 in between 3 and 32 n(A) = 4,8,12,16,20,24,28.

                                                                  = 7.


Therefore the required probability P(A) = n(A)/n(S)

                                                                     = 7/30.


Hope this helps!