What is the square root of 6 times the square root of 8?

How many lines can be drawn through points j and k? 0 1 2 3

Find the volume of the described solid.the solid lies between planes perpendicular to the x-axis at x = 0 and x=7. the cross sectionsperpendicular to the x-axis between these planes are squares whose bases run from the parabolay=-31x to the parabola y = 30/x.a) 441b) 147c) 864d) 882

Can someone me with these two circle theorem questions asap?