A field in the shape of trapezium has its parallel sides as 15 m and 11 m while the non parallel sides are 13 m and 15 m. Find the amount of money farmer has to pay if the cost of sowing the seeds per m^{2} area is QR70.

A sphere and a right circular cylinder have the same radius. If the volume of the sphere is one fifth the volume of the cylinder, then what is the ratio of cylinder's height and radius?