An A square fits exactly inside a circle with each of its vertices
being on the circumference of the circle.
The square has sides of length x cm.
The area of the circle is 56 cm.
Work out the value of x.
Give your answer correct to 3 significant figures.

You coordinate volunteers for litter cleanup in local parks. your spreadsheet lists drivers and the number of seat belts in each driver’s car. the spreadsheet calculates the number of drivers (d) and the total number of seat belts (s). you want to know the maximum number of volunteers, besides drivers, that can be transported to the park in a single trip given that each person must have a seat belt of their own.