The height of a cone is 30 cm. A small cone is cut off at the top by a plane parallel to the base. If its volume is 1/27 of the volume of the given cone, then what is the height above the base at which the section is made.
Water in a Canal 6 metre wide and 1.5 m deep is flowing with a speed of 10 km per hour how much area will it irrigate in 30 minute if of standing water is needed
If the mid point of line segment joining the points p (6,a-2) and Q (-2,4) is (2,-4) then find the value of