The surface area of a cylinder is 207.24dm2, the bottom area is 28.26dm2, and the perimeter of the bottom surface is 18.84dm. What is the volume of the cylinder in cubic decimeter?
Height = side area △ bottom perimeter = (207.24-28.26 × 2) △ 18.84 = 8 (DM)
The volume of this cylinder = bottom area × height = 28.26 × 8 = 226.08 (cubic decimeter)