LESSON 26.3
Name
Relate Perimeter and Area
Rectangles with the same perimeter can have different areas.
Look at the rectangles below. Each
Remember. . .
rectangle has a perimeter of 24 cm,
Area (A)
length (l)
width (w)
but their areas are different.
1 cm
2 cm
3 cm
4 cm
6 cm
A
B
C
D
E
Rectangle A:
Rectangle B:
Rectangle C:
Rectangle D:
Rectangle E:
1 cm
11 cm
2 cm
10 cm
3 cm
9 cm
4 cm
8 cm
6 cm
6 cm
2
2
2
2
2
Area
Area
Area
Area
Area
11 cm
20 cm
27 cm
32 cm
36 cm
2
Rectangle E is the rectangle with the greatest area, 36 cm
.
Use the grid to draw rectangles for the given perimeter. Name
Check students’
drawings.
the length and width of the rectangle with the greatest area.
Perimeter
12 cm
Perimeter
28 cm
1.
2.
l
3 cm, w
3 cm
l
7 cm, w
7 cm
RW138 Reteach