This isn’t a specific question but can someone explain how to find the surface area of a square

What could explain what happened when the time was equal to 120 minutes

On a cm grid, point p has coordinates (3,-1) and point q has coordinates (-5,6) calculate the shortest distance between p and q give your answer to 1 decimal place

When you flip a biased coin the probability of getting a tail is 0.6. how many times would you expect to get tails if you flip the coin 320 times?