A kite shaped card-board is rotated about its line of symmetry (shown by dotted line). The solid figure so obtained has :

(i) one cone formed

(ii) two cones formed

(iii) three cones formed

1. only (ii)

2. only (iii)

3. both (i) and (iii)

4. neither (i) nor (iii)

When the kite shaped card-board is rotated about line of symmetry then three cones are formed, two from the square shaped part and one from the triangle shaped part.

Hence, Option 2 is the correct option.