An athlete takes 33 minutes and 50 seconds to run 10 000 m. Work out the athlete’s average speed in kilometres/hour (round to 3sf).

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