Agree with Etch.
Just some extra info for you, lankeela. 77 x 35 m in square metres in literally 77 x 35, which is 2,695.
To convert that to square feet, there are lots of ways but the simplest is literally to Google:
2,695 square metres in square feet
It gives you the answer (29008.74) and also gives you a formula for doing it yourself next time (multiply by 10.764), although it would be easier to use Google again ...