The diameter and the slant height of a conical tomb are 28 m and 56 m respectively. The cost of  white washing its curved surface at the rate of  80 paise per: square metre is :

1) Rs. 2640

2) Rs. 1760

3) Rs. 264

4) Rs. 176

If the ordinate of a point on the parabola y² = 4x is twice the latus rectum, then the point is:
1. (8, 4)
2. (4, 8)
3. (8, 16)
4. (16, 8)