ADA: Can you tell which are regular polygons and which are irregular polygons ... Ada introduces Zach and Kayla to the concept of area, and different ways to measure and calculate the area of ...

Polygons are multi-sided shapes with different ... The perimeter of a 2D shape is the total distance around the outside of the shape. The area of a 2D shape is the space inside the shape.

The sides of the rectangle are therefore h and 2πr. The area of each of the two circles is \(\pi r^2\)and the area of the rectangle is \(2 \pi r \times h\). The surface area of a cylinder is the ...

A cylinder is not a prism because the circle is not a polygon. Image caption, The total surface area of a prism is made up of the areas of the two end faces and the rectangles that join them.