# Question 1 of 40

The following figure are made up of unit cubes stacked at a corner of a room and painted. The first three figures are shown below. \begin{array}{|c|c|c |} \hline \mbox{Figure No.} & \mbox{No. of cubes} & \mbox{No. of faces of the cubes that are painted} \\ \hline 1 & 1 & 3 \\ \hline 2 & 4 & 9 \\ \hline 3 & 10 & 18\\ \hline 4 & (i) & (ii) \\ \hline \end{array} (a) Find the number of Cubes and Number of painted faces of cubes for figure 4.
(b) In which figure number would 165 faces of the cubes be painted?

A
(a) (i) 15
(ii) 25
(b) 5
B
(a) (i) 20
(ii) 30
(b) 10
C
(a) (i) 25
(ii) 35
(b) 15
D
(a) (i) 30
(ii) 40
(b) 20
E
None of the above