A cylinder and a cone are of same base radius and of same height. Find the ratio of the volume of the cylinder to that of the cone.

if the angle of elevation of a cloud from a point  h m above a lake is and the angle of depression of its reflection inthe lake is ,prove that hte distance of the cloud from d point of obsevation is  2 h sec /tan-tan .             frndz and     teachers plz make it fast.........i want d ans 2 day itself.....having xamz 2 morrow

 In a flight of 600 km, an aircraft was slowed down due to the bad weather. Its average speed for the trip was reduced by 200 km/hr and the time of the flight increased by 30 minutes. Find the duration of the fligth.

a vertical tower stands on a horizontal  plane & is surmounted  by a flagstaff of height 7m. from a point on the plane the angle of elevation of the bottom of a flag staff is 30  & that of the top of the flag staff is 45 .find the height of the tower.

From a solid cylinder whose height is 8cm and radius 6cm , a conical caity of height 8 cm  and of base radius 6 cm , is hollowed out . Find the volume of the remaining solid correct to two places of decimal .Also find the surface area of the remaining  solid . (=3.1416)