The document discusses how to find the perimeter and area of irregular figures. To find the perimeter, you add up the lengths of all the sides of the figure. To find the area of a rectangle, you multiply the length by the width. The example figure has a perimeter of 60 units, found by adding up all the side lengths. The example rectangles have areas of 24 and 80 square units, found by multiplying length by width for each.

10. PERIMETER and
AREA of
IRREGULAR
FIGURES

11. Perimeter-
the distance around a figure.
To find the perimeter of a
figure, find the sum (add up) of
the lengths of all of its sides.
What is the
perimeter of
this figure?
8
12 + 18 + 8 + 10 + 4 + 8 = 60 units
4
10
8
12
18

12. Area of a rectangle-
the product of the length and width of a
rectangle.
To find the area of a
rectangle, multiply
the length times the width.
6
8
10
6
4
14
4 x 6 = 24
8 x 10 = 80
24 + 80 = 104 square units
6
4
8
10