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.

Long division setup showing an incomplete calculation. 12 is in the divisor, 6839 is in the dividend, and 5 hundreds and 6 tens is written in the quotient. 6000 is subtracted from 6839 to give 839. an unknown value represented by a box is being subtracted from 839. what number should be placed in the box to complete the division calculation?