Answer: A = 93.8 cm so if you round up it's about 100 cm
Explanation:
Area means you have to multiply all measurements by each other in any order of course because it doesn't matter in this case.
14 * 10 * 10 = 1400
Now you can/should divide the answer which is (1400) by how many measurements you have times the sides it has, sides - which is 5 , measurements - which is 3, so it would look like this:
1400 / 15 = 93.8