4. Length Perpendicular height Area of a parallelogram = length × perpendicular height A = l×h Finding Area of a Parallelogram
5. Perpendicular height Length a Length b Finding Area of a Trapezium Area of a trapezium = ½ (length a + length b) × perp height A = ½ (a+b) × h
6. Radius, r Diameter, d Circumference, c Area of a circle = 3.14 × radius 2 A = π×r 2 Area & Circumference of a Circle Circumference of a circle = 3.14 × diameter C = π×D = 2×π×r
7. Shape Area Triangle ½ ( L×W) Square L×W Rectangle L×W Parallelogram L × Height Trapezium (A + B) × Height 2 Circle × r ²
8.
9.
10. Surface Area To find the surface area of a 3D shape, imagine it laid out as a net. Calculate the area of each side and then add them together.
11.
12. Volume of a Cuboid This is also the same as the area of the rectangle on one end (cross section) multiplied by the length of the cuboid Volume of cuboid = length × width × height V = l × w × h
13.
14. Finding the Area of a Prism Volume of prism = Triangle area x length
18. Length Perpendicular height Area of a parallelogram = length × perpendicular height A = l×h Finding Area of a Parallelogram
19. Perpendicular height Length a Length b Finding Area of a Trapezium Area of a trapezium = ½ (length a + length b) × perp height A = ½ (a+b) × h
20. Radius, r Diameter, d Circumference, c Area of a circle = 3.14 × radius 2 A = π×r 2 Area & Circumference of a Circle Circumference of a circle = 3.14 × diameter C = π×D = 2×π×r
21. Shape Area Triangle ½ ( L×W) Square L×W Rectangle L×W Parallelogram L × Height Trapezium (A + B) × Height 2 Circle × r ²
22.
23.
24. Surface Area To find the surface area of a 3D shape, imagine it laid out as a net. Calculate the area of each side and then add them together.
25.
26. Volume of a Cuboid This is also the same as the area of the rectangle on one end (cross section) multiplied by the length of the cuboid Volume of cuboid = length × width × height V = l × w × h
27.
28. Finding the Area of a Prism Volume of prism = Triangle area x length
30. Shape Area Triangle ½ ( L×W) Square L×W Rectangle L×W Parallelogram L × Perp Height Trapezium (A + B) × Height 2 Circle Area × r ² Circle Circumference 2× ×r or ×D