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Composite Figures
2009
Finding Perimeter
Add up outside sides only.
Find the missing sides.
Perimeter Examples
5 in
16 in
2 in
7 in5 in
14 in
What are the missing sides?
Perimeter Example Continued...
Add up the sides.
Perimeter Example Continued...
16 + 7 + 14 + 5= 42 in
Area Notes
Break the figure into smaller pieces.
Find the area of each piece.
Add the areas together. If only one area is shaded, then you will subtract the areas.
Area example
What two figures make up this figure?
Area example
Rectangle Triangleand
Area continued...
A=BhA=(5) (14)A= 70 in2
A= 1/2 BhA=1/2 (2)(5)A=5 in2
+
Area continued...
70 in25 in2
+ = 75in2
Now, we will solve for AREA AND PERIMETER of the following shapes together. Use your yellow paper to show your work and use your ruler to measure the sides of the shapes. We will glue it into your INB when we are finished.
Area Perimeter
Area Perimeter
Area Perimeter
Area Perimeter
Area Perimeter