Question

An apple orchard covers 50 acres of land. what is the area of the orchard in square meters? round the answer to the nearest meter.

Answer 1

One acre = 4,047 square meters.  So, 50 acres = 50 * 4,047 = 202,350 square meters.

Incidentally, the hectare is usually used for land measure and 50 acres = 2,023.5 hectares.
(One hectare = 100 square meters).