Solve two challenging problems that apply properties of tangents to find the perimeter of a circumscribing shape.

[Free Registration/Login Required] Answer questions about the halves and fourths of circles and rectangles, and collect coins for each correct answer.

Use this site to practice identifying shapes, colors, and animals with these interactive games.

This online calculator will calculate the various properties of a cylinder given 2 known values. It will also calculate those properties in terms of PI.

This online calculator will calculate the various properties of a right circular cone given any 2 known variables.

This activity allows students to discover the number Pi. By measuring real life objects, students will get to see where the number Pi comes from as well as how the circumference formula is derived.This lesson plan was created as a result...

Online calculator to calculate the surface area of geometric solids including a capsule, cone, frustum, cube, cylinder, hemisphere, pyramid, rectangular prism, sphere, spherical cap, and triangular prism