1. To find the surface area of a composite 3D figure, you first need to break it down into simpler shapes like cubes, rectangular prisms, cylinders, etc. Then find the surface area of each individual shape and add them together.
2. The formula for calculating the surface area of a cube is SA = 6s^2, where s is the length of one side of the cube.
3. The formula for calculating the surface area of a rectangular prism is SA = 2lw + 2lh + 2wh, where l is the length, w is the width, and h is the height of the prism.
4. The formula for calculating the surface area of a cylinder is SA = 2πr^2 + 2πrh, where r is the radius and h is the height of the cylinder.
5. Once you have found the surface area of each individual shape, add them together to get the total surface area of the composite 3D figure.
surface area of composite 3d figures quick check answers
1 answer