Question

Explain how to calculate the surface area of a composite figure in your own words.

Answer 1

To calculate the surface area of a composite figure, find the areas of the individual shapes and add them together.

Step-by-step explanation:

To calculate the surface area of a composite figure, you need to find the areas of all its individual components and then add them together.

1. Separate the composite figure into its different shapes.
2. Calculate the surface area of each shape using the appropriate formula (e.g., area of a rectangle, area of a circle).
3. Add up the surface areas of all the shapes to find the total surface area of the composite figure.

For example, if the composite figure is made up of a rectangular prism and a cylinder, you would calculate the surface area of the rectangular prism using the formula 2lw + 2lh + 2wh, and the surface area of the cylinder using the formula 2πr² + 2πrh. Then, you would add these two surface areas to find the total surface area of the composite figure.

Answer 2

To calculate the surface area of a composite figure you must apply the formulas for calculate the area of each figure that is part of the composite figure and then, you must sum all the areas calculated.

For example, is the composite figure is form by a triangle and rectangle, the surface area of the composite figure will be:

SA= Area of the triangle+ Area of the rectangle= (bh/2)+bh