[" A sursament and square of wo consecuve od intheers is "399." Find the values of "y" .Hence find the "],[" radius "A(-1,y)" and "B(5,7)" lie on a circle with centre "O(2,-3y)" .Find the values of "y" .Hence find the "],[" radius of the circle."],[" Construct a right triangle whose hypotenuse and one side measures "10cm" and "8cm" respective "]