The x and y co-ordinates of six points are tabulated as below. Observe the table carefully and answer the given question.
| Points | X-co-ordinate | Y-co-ordinate |
| A | 15 | 42 |
| B | 20 | 46 |
| C | 18 | 44 |
| D | 16 | 48 |
| E | 21 | 50 |
| F | 22 | 52 |
Find the distance between F and C.
\(\sqrt{80}\ \text{units}\)
\(\sqrt{42}\ \text{units}\)
\(\sqrt{8}\ \text{units}\)
\(\sqrt{13}\ \text{units}\)
Mr Rao purchased a laptop for ₹45,000. After a few months, as his office provided another laptop, he sold it at a loss of 12% to Mrs Sharma. After one year, she sold it to an engineering student for a profit of 12%. What is the amount the student had to pay?