The bottom area is 33, the bottom radius is (33/pi) (1/2) = 3.24, and the ground perimeter is 2*PI*3.24=20.35.
According to the radius of the bottom surface and the height of the conical part, the radius of the conical part can be calculated as 3.8 1.
Canvas required for a yurt = 20.35 *10+3.81* 20.35/2 = 242.27.
Total canvas required = 15*242.27=3634.00.