BBC6 年
How to prove a cone's surface area = π × r × slant length
the bottom edge of the rectangle is 1/2 of the circumference of the base of the cone ... into the rectangle show the area of the curved surface of the cone = π × radius × slant length.
BBC2 年
How to show a cone's surface area = π × r × slant length
the bottom edge of the rectangle is 1/2 of the circumference of the base of the cone ... into the rectangle show the area of the curved surface of the cone = π × radius × slant length.
Cone Park planning to open soon
Each year, thousands of people spend part of their winter sledding at Cone Park in Sioux City. And thanks to recent ...