what is the diagonal of a square is 14 m, what is the area?

2 answers

Please clarify your question.
Currently, it is asking what the diagonal is, but also stating that the diagonal is 14 m.
surely you meant

If the diagonal of a square is 14 m, what is the area?

well, if the diagonal is d, the area is d^2/2

because if the square's side is s, the area is s^2. The diagonal is s√2, so d^2 = 2s^2