What is the formula for finding the area of a figure composed of a rectangle and a semicircle?
To find the area of a figure composed of a rectangle and a semicircle, we need to calculate the combined area of the rectangle and the semicircle separately, and then add them together.
Here's how you can do it step by step:
1. Find the area of the rectangle:
- The formula for the area of a rectangle is A = length * width. Measure the length and width of the rectangle.
- Multiply the length and width of the rectangle to get the area.
2. Find the area of the semicircle:
- The formula for the area of a semicircle is A = 1/2 * π * r^2, where π is a mathematical constant approximately equal to 3.14159 and r is the radius of the semicircle.
- Measure the radius of the semicircle.
- Plug in the value of the radius into the formula and calculate the area.
3. Add the areas of the rectangle and the semicircle:
- Take the calculated areas of the rectangle and semicircle and add them together to get the total area of the figure.
Note: Make sure to use the appropriate units of measurement (e.g., square units).
Remember, by breaking down the figure into its individual components and calculating their areas separately, you can find the total area of the figure composed of a rectangle and a semicircle.