Answer:

Explanation:
The diagonal of a square is x units.
Let the side of a square is s.
Using pythagoras,

The area of the square is,
A = s²
So,

So, the area of a square is
sq units.
we cannot survive without oceans.
Answer: Yes the answer is true. How ever, you can add a few points like:
Explanation: If nuclear bombs were blown at the end of mars ploes, it could change its weather.(Elon Musk). It is also observed that there is higher oxygen levels in the northern parts of mars.(information from Uae mars probe). So yes you are right but there are /can be a few similarities between earth and mars.
Answer:
c. Montevideo, Uruguay (35°S)
Explanation:
Montevideo, Uruguay (35°S) had the longest day on June 21, 2019 during the Summer Solistics when the sun is directly over the tropic of cancer which is on latitude 23.5 degrees North. Montevideo is closest in latitude to this point among the options and as such will experience a longer day compared to the other options.
I believe the answer is DEMOCRATIC. Hope this helps!