资讯

BBC7 年
How to prove a cone's surface area = π × r × slant length
A simple guide on how to prove the surface area of a cone is π × radius × length, aimed at students aged 11 to 14. BBC ... Use a ruler to draw along the fold, then shade half of the shape in ...
BBC1 年
How to show a cone's surface area = π × r × slant length
A simple guide on how to show the surface area of a cone is π × radius × length, aimed at students aged 11 to 14. BBC ... Use a ruler to draw along the fold, then shade half of the shape in ...