1. L.O. calculating area and perimeter
Find 5 cm
perimeter
10 cm
30 cm 50 cm
15 cm 25 cm

2. L.O. calculating area and perimeter
Find 6 cm
perimeter
11 cm
14 cm 66 cm
55 cm 34 cm

3. L.O. calculating area and perimeter
Find 2 cm
perimeter
8 cm
30 cm 16 cm
15 cm 20 cm

4. L.O. calculating area and perimeter
Find 8 cm
perimeter
12 cm
30 cm 40 cm
128 cm 20 cm

5. L.O. calculating area and perimeter
Find 3 cm
perimeter
7 cm
30 cm 21 cm
20 cm 10 cm

6. L.O. calculating area and perimeter
Find 5 cm
area
10 cm
30 cm² 50 cm²
15 cm² 25 cm²

7. L.O. calculating area and perimeter
Find 4 cm
area
9 cm
30 cm² 26 cm²
30 cm² 36 cm²

8. L.O. calculating area and perimeter
Find 2 cm
area
4.5 cm
18 cm² 13 cm²
32 cm² 9 cm²

9. L.O. calculating area and perimeter
Find 6 cm
area
12 cm
30 cm² 72 cm²
18 cm² 36 cm²

10. L.O. calculating area and perimeter
Find 5.5 cm
area
10 cm
55 cm² 30 cm²
15.5 cm² 25 cm²

11. L.O. Investigating perimeter - finding all possibilities
A farmer has a goat pen which uses 36 m of fencing.
One night, during a storm, the goat pen is destroyed.

12. The farmer wants to re-build the rectangular goat
pen, but has only 36m of fencing and cannot
remember the exact dimensions from the first pen.
Can you help ?
Remember:
• the pen is rectangular
• only 36m of fence can be used