2. Area of a Rectangle A=LW Length times Width Length width = 20 cm =12 cm A=20 12 A=240 cm 2

3. Area of a Square A= s 2 A= side to the second power A= 6 2 A= 66 A= 36 ft 2 6 feet side

4. Area of Triangle A= ½bh Base (bottom) Height 8 km = 9.5 km A= ½ 8 9.5 A= 0.5 8 9.5 A= 38 km 2

5. Area of a Triangle 33 mm 54 mm A = ½ 33 54 A = 0.5 33 54 A = 891 mm 2

6. Area of Parallelograms 3 m 5 m A = bh A = 5 3 A = 15 m 2

7. Area of Trapezoid A = ½ h (b 1 + b 2 ) 14 m 6 m 8 m A = ½ 14 (6 + 8) A = ½ 14 14 A = 0.5 14 14 A = 98 m 2

8. Perimeter of Any Shape Add up all of the sides. 10 in 8 in P = 56 in 3 in 9 in 4 in P = 29 in

9. Perimeter of Rectangles and Squares Rectangle P = 2L + 2W 16 mm 6 mm P = 2 16 + 2 6 P = 32 + 12 P = 44mm 12 cm Square P = 4s P = 4 12 P = 48 cm

10. Perimeter Fencing Border Edging Area Carpet Tiles Painting