BBC28 天
How to show a cone's surface area = π × r × slant length
Image caption, ...you've done it! The sectors rearranged into the rectangle show the area of the curved surface of the cone = π × radius × slant length.
BBC10 个月
Module 3 (M3) - Geometry and measures - Surface area and volume of cylinders, cones and spheres
The area of each of the two circles is ... The volume of the cone is one third of the volume of the cylinder. The formula for the volume of a cone is: \(\text{volume of a cone} ...