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Curated Video
The volume of a cone
Pupil outcome: I can calculate the volume of a cone. Key learning points: - The volume of a cone can be found by displacement. - Putting a cone into a cylinder filled with water displaces the water. - When the cone is removed, the water...
Curated Video
The surface area of a cone
Pupil outcome: I can calculate the surface area of a cone. Key learning points: - The slanted surface of a cone can be cut into congruent triangles. - These form a parallelogram with dimensions of the slanted length and half of the...
Curated OER
What is a Cone?
What are the things that make a shape a cone? Here's a list of things that define a cone: base, height, vertex, radius, curved side. Are you familiar with all these terms? The teacher diagrams a cone and identifies all the components in...
Curated OER
How Do You Find the Slant Height of a Cone?
Use the Pythagorean theorem formula to find the slant height of a cone. If the height of the cone and the radius of the base are given, using the Pythagorean theorem formula will be a piece of cake. Just plug in the values given and solve.
Sophia Learning
Sophia: Slant Height of a Cone
This video lesson demonstrates how to find the slant height of a right cone. Students can check their understanding with an assessment. [6:18]