Find AREA fast pls ASAP

To determine the number of deer in a forest a forest ranger tags 280 and releases them back

Me. i can't figure out this question. give an explanation too. .

Iwill give brainliest. suppose tommy walks from his home at (0, 0) to the mall at (0, 5), and then walks to a movie theater at (6, 5). after leaving the theater tommy walks to the store at (6, 0) before returning home. if each grid square represents one block, how many blocks does he walk?